Donald Trump retook the White House vowing to stage “the largest deportation operation in American history”. As previewed, the administration has set about further militarizing the US-Mexico border and targeting asylum seekers and refugees while conducting raids and deportations in undocumented communities, detaining and deporting immigrants and spreading fear.Critics are outraged, if not surprised. But few expected the new legal chapter that unfolded next: a multipronged crackdown on certain people seen as opponents of the US president’s ideological agenda. This extraordinary assault has come in the context of wider attacks on higher education, the courts and the constitution.Here are some of the most high-profile individual cases that have captured the world’s attention so far because of their extreme and legally dubious nature, mostly involving documented people targeted by the Trump administration in the course of its swift and unlawful power grab.Students and academics hunted and ‘disappeared’In recent weeks, Immigration and Customs Enforcement (Ice) teams suddenly began arresting and detaining foreign-born students and academics on visas or green cards. In most cases the government has cited their roles in pro-Palestinian campus protests over Israel’s war in Gaza following the 7 October 2023 attack. Claims that they “support Hamas” are invoked as justification for wanting to deport them, even though they have not been charged with any crimes. Those taken include:Mahmoud KhalilA recent graduate student of Columbia University in New York, Mahmoud Khalil, 30, is a Palestinian green card holder who was a leader during protests last year. He was arrested in front of his pregnant wife and has been in a detention center in Louisiana since mid-March.View image in fullscreenThe government is using obscure immigration law to make extraordinary claims in cases like Khalil’s that it can summarily detain and deport people for constitutionally-protected free speech if they are deemed adverse to US foreign policy. A far-right group has claimed credit for flagging his and others’ names for scrutiny by the authorities.Rümeysa ÖztürkView image in fullscreenUS immigration officials wearing masks and hoodies encircled and grabbed the Tufts University PhD student in a suburb of Boston and bustled her into an unmarked car, shown in onlooker video. Öztürk, a Fulbright scholar and Turkish national on a visa, had co-written an op-ed in the student newspaper, criticizing Tufts’ response to Israel’s military assault on Gaza and Palestinians. She was rushed into detention in Louisiana in apparent defiance of a court order. Öztürk, 30, says she has been neglected and abused there in “unsafe and inhumane conditions”.Mohsen MahdawiView image in fullscreenMahdawi, a Palestinian green-card holder and student at Columbia University, was apprehended by Ice in Colchester, Vermont, on 14 April, according to his lawyers and a video of the incident, first reported by the Intercept.He was prominent in the protests at Columbia last year. During his apprehension he was put into an unmarked car outside a federal office where he was attending an interview to become a naturalized US citizen, his lawyer said.Yunseo ChungView image in fullscreenAnother student at Columbia, Chung, 21, sued the Trump administration for trying to deport her, and has gone into hiding. She is a pro-Palestinian campaigner and was arrested by the New York police in March while protesting against the university’s punishments of student activists, as first reported by the New York Times. She said a government official told her lawyer they want to remove her from the country and her residency status was being revoked. Chung was born in South Korea and has been in the US since she was seven.Alireza DoroudiView image in fullscreenThe Democrats on campus group at the University of Alabama said of the arrest of Doroudi, an Iranian studying mechanical engineering: “Donald Trump, Tom Homan [Trump’s “border czar”], and Ice have struck a cold, vicious dagger through the heart of UA’s international community.”Less is known about the federal government’s claims against Doroudi but it is understood he was taken to the same Ice processing center in Jena, Louisiana, where Khalil is behind bars, NBC reported.Badar Khan SuriView image in fullscreenMore than 370 alumni of Washington DC-based Georgetown University joined 65 current students there in signing on to a letter opposing immigration authorities’ detention of Dr Badar Khan Suri, a senior postdoctoral fellow at the institution’s Alwaleed Bin Talal Center for Muslim-Christian Understanding (ACMCU).The authorities revoked his student visa, alleging the citizen of India’s father-in-law was an adviser to Hamas officials more than a decade ago – and claiming he was “deportable” because of his posts on social media in support of Palestine. He was taken to Louisiana and then detention in Texas and was given court dates in May.Kseniia PetrovaThe Harvard Medical School research scientist was stopped at Boston’s Logan airport by US authorities on her way back from France in February, over what appeared to be an irregularity in customs paperwork related to frog embryo samples. She was told her visa was being revoked and she was being deported to her native Russia.When Petrova, 30, said she feared political persecution there because she had criticized the invasion of Ukraine, she was taken away and also ended up in an overcrowded detention facility in Louisiana.Student visas revokedMore than 1,300 international students from at least 200 colleges across the US have had their “legal status changed” by the state department, including the revoking of visas, between mid-March and mid-April, Inside Higher Education has reported. The specialist publication called it “an explosion of visa terminations”.The schools and students have been given little information, but secretary of state Marco Rubio has lambasted protesters and campus activists as “lunatics”. Some have been cited for pro-Palestinian views, others concluded they must have been targeted because of minor crimes or offenses, such as a speeding ticket. Some can find no specific reason why their visa would be revoked. Many are from India and China, the Associated Press reported, and panic is setting in on campuses.High-profile cases include:Felipe Zapata VelásquezView image in fullscreenThe family of University of Florida student Felipe Zapata Velásquez, 27, said he is “undergoing a physical and emotional recovery process” in his native Colombia after police arrested him in Gainesville in March for traffic offenses and turned him over to Ice. He agreed to be deported, to avoid lengthy detention and legal battles. Democratic congressman Maxwell Frost accused authorities of “kidnapping” Velásquez.Momodou TaalTaal, a dual citizen of Britain and Gambia, was pursuing a PhD at Cornell University’s Africana Studies and Research Center, and was an outspoken activist on the Ivy League campus. He was suspended last year for his role in anti-Zionist protests. He sued the Trump administration over labeling foreign student protesters anti-Semitic and was told to surrender to immigration officials. He has since left the country.Deported by (admitted) mistakeKilmar Ábrego GarcíaView image in fullscreenThe Salvadoran man was deported to El Salvador by mistake, which the Trump administration admitted. But then it essentially defied a US supreme court order to “facilitate” his return to his home and family in Maryland from a brutal mega-prison in the central American country. Ábrego García was undocumented but had protected status against being deported to El Salvador. He was flown there anyway, without a hearing. The administration accuses him of being a violent gangster and has abandoned him, infuriating a federal judge and prompting warnings of a constitutional crisis. He has not been charged with any crimes but was swept up with hundreds of Venezuelans also deported there. Sheet metalworkers union chief Michael Coleman described Ábrego García as an “apprentice working hard to pursue the American dream” and said he was not a gang member. Trump said he was eyeing Salvadoran prisons for US citizens.Deported to a third country, without due processThe US deported more than 230 Venezuelan men to the mega-prison in El Salvador without so much as a hearing in mid-March despite an infuriated federal judge trying to halt the flights, then blocking others. Donald Trump took extraordinary action to avoid due process by invoking the 1798 Alien Enemies Act (AEA), a law meant only to be used in wartime, prompting court challenges led by the American Civil Liberties Union (ACLU). John Roberts, the US chief justice, rebuked the president when he threatened the judge. The justices, by a majority, did not stop Trump from using the AEA but the bench unanimously reaffirmed the right to due process and said individuals must be able to bring habeas corpus challenges.Most of the men are reportedly not violent criminals or members of violent gangs, as the Trump administration asserts, according to a New York Times investigation.Many appear to have been accused of being members of the transnational Venezuelan gang Tren de Aragua partly on the basis of their tattoos, with their families speaking out, including:Andry José Hernández Romeroskip past newsletter promotionafter newsletter promotionView image in fullscreenHernández, a 31-year-old makeup artist and hairdresser, entered California last year to attend an asylum appointment, telling the authorities he was under threat in Venezuela as a gay man. But he was detained and accused of being in Tren de Aragua because of his tattoos, then suddenly deported under Trump, deemed a “security threat”.Jerce Reyes BarriosThe former professional footballer, 36, has been accused of gang membership by the Department of Homeland Security, seemingly because of his tattoos, including one of a crown sitting atop a soccer ball with a rosary and the word “dios”.“He chose this tattoo because it is similar to the logo for his favourite soccer team, Real Madrid,” his lawyer, Linette Tobin, said, adding that her client fled Venezuela after protesting the government and being tortured.Francisco Javier García CasiqueView image in fullscreenRelatives were shocked when they spotted Francisco Javier García Casique, 24, in a propaganda video from El Salvador showing scores of Venezuelan prisoners being frog-marched off planes and into custody there. He is a barber in his home town of Maracay and is completely innocent of gang involvement, the family said, adding that Francisco and his brother Sebastián have matching tattoos quoting the Bible.Migrants seeking asylum removed to PanamaA US military plane took off from California in February carrying more than 100 immigrants from countries as far flung as Afghanistan, Iran, Uzbekistan, China, Sri Lanka, Turkey and Pakistan, dumping them in Panama. They were shackled and deported to a third country because their nations of origin refuse to accept them back from the US. Shocking scenes unfolded of the people locked in a hotel in Panama City, signaling and writing on the windows pleading for help.The people, including children, were then moved and held at a facility deep in the dense jungle that separates Panama from Colombia. They were later reportedly freed and were seeking asylum from other countries, their futures uncertain. One of those deported from the US was:Artemis GhasemzadehView image in fullscreenGhasemzadeh, 27, a migrant from Iran, wrote “Help us” in lipstick on a window of the hotel in Panama City, as a desperate way of alerting New York Times reporters on the street to her and fellow detainees’ plight. She had thought that, especially as a convert from Islam to Christianity who faces danger in Iran as a result, that she would be offered freedom in the US, she told the newspaper while still in custody.Americans questioned and threatenedAmir MakledView image in fullscreenMakled, a Detroit-born attorney, was questioned at the airport on returning from vacation. He was flagged to a terrorism response team, kept behind and pressured to hand over his phone, then give up some of its contents. The Lebanese American represents a pro-Palestinian student protester who was arrested at the University of Michigan. Experts said the incident was evidence of a weakening of fourth amendment constitutional protections at the border against “unreasonable search and seizure”.Nicole MicheroniView image in fullscreenThis Massachusetts immigration lawyer, a US-born American citizen, spoke out after receiving an email from the Trump administration telling her “it is time for you to leave the United States”. She said it was “probably, hopefully, sent to me in error. But it’s a little concerning these are going out to US citizens.” She told NBC she thought it was a scare tactic.Visitors detainedJasmine Mooney, CanadaView image in fullscreenCanadian Jasmine Mooney was shackled and ended up in Ice detention in the US for two weeks over an alleged work visa irregularity while on one of her frequent visits to California. She spoke out about the harsh conditions and the information black hole and how outraged she was that so many other detainees she met, who helped her, are stranded without access to the kind of resources that ultimately got her out.Rebecca Burke, UKView image in fullscreenThe British graphic artist was stopped at the border when she headed from Seattle to Canada as a backpacker and, because of a visa mix-up, she became one of 32,809 people to be arrested by Ice during the first 50 days of Trump’s presidency. Almost three weeks of grueling detention conditions later, she smuggled out her poignant drawings of fellow detainees when she was released.Jessica Brösche, GermanyThe German tourist and tattoo artist, 29, from Berlin was detained by US immigration authorities and deported back to Germany after spending more than six weeks in US detention, including what she described as eight days in solitary confinement. Her family compared her ordeal to “a horror film”.Fabian Schmidt, GermanyView image in fullscreenThe 34-year-old German national and US green card holder was apprehended and allegedly “violently interrogated” by US border officials as he was returning to New Hampshire from a trip to Luxembourg. His family said he was held for hours at Boston’s Logan airport, stripped naked and put in a cold shower, then later deprived of food and medicine, and collapsed. His case is being investigated and as of mid-April he was in Ice detention in Rhode Island.Sent back‘Jonathan’A man with a US work visa provided his anonymous account to the Guardian of being denied entry into the US after a trip to his native Australia to scatter his sister’s ashes. He was pulled aside on arrival in Houston, Texas, and accused, variously, of selling drugs and having improper paperwork. After being detained for over a day he was put on a flight back to Australia even though he has worked on the US east coast for five years, where he lived with his girlfriend.Denied entry – for criticizing Trump?Alvin Gibbs, Marc Carrey and Stefan Häublein of band UK SubsView image in fullscreenMembers of the punk rock band UK Subs said they were denied entry and detained in the US on their way to play a gig in Los Angeles, after being questioned about visas. Bassist Alvin Gibbs said: “I can’t help but wonder whether my frequent, and less than flattering, public comments regarding their president [Trump] and his administration played a role.” He and the two band mates were kept in harsh conditions for 24 hours then deported back to the UK.French scientistA French scientist, who has not been publicly named, was denied entry to the US after immigration officers at an airport searched his phone and found messages in which he had expressed criticism of the Trump administration, according to a French government minister. The researcher was on his way to a conference in Texas.“Freedom of opinion, free research, and academic freedom are values that we will continue to proudly uphold,” Philippe Baptiste, France’s minister of higher education and research, told Le Monde. More