This 11 September will be the 20th anniversary of the attacks on the World Trade Center and the Pentagon and the crash of Flight 93. Two wars have left 6,700 Americans dead and more than 53,000 wounded. After the Trump presidency, America roils in a cold civil war. In Afghanistan, the Taliban is on the move again. Saddam Hussein is dead and gone but Iraq remains “not free”.

In other words, the war on terror has produced little for the US to brag about. In an April Pew poll, two-thirds of respondents rated international terror as a “big” problem, albeit one that trailed healthcare, Covid, unemployment and 10 more.

Against this bleak backdrop, Spencer Ackerman delivers his first book under the subtitle “How the 9/11 Era Destabilized America and Produced Trump”. It is part-chronicle, part-polemic. The author’s anger is understandable, to a point.

Ackerman displays a masterful command of facts. No surprise. In 2014, he was part of the Guardian team that won a Pulitzer for reporting on Edward Snowden’s leaks about the National Security Agency.

Ackerman stuck with the topic. A contributing editor at the Daily Beast, he has also been its senior national security writer. Ackerman is fluent in discussing the so-called security state, and how it is a creature of both political parties.

In the face of Snowden’s revelations, congressional leaders came out for the status quo. According to Harry Reid, then the Democratic Senate majority leader, senators who complained about being left in the dark about the NSA had only themselves to blame. All other Americans were to sit down and shut up.

Nancy Pelosi, then House minority leader and a persistent critic of the Patriot Act, a chief vehicle for surveillance powers, declined to criticize Barack Obama or high-tech intrusion in general. Instead, she called for Snowden’s prosecution. He made Russia his home.

Ackerman notes that the American Civil Liberties Union and Rand Paul, Kentucky’s junior senator, were notable exceptions to the rule. At the time, Paul remarked: “When you collect it from a billion phone calls a day, even if you say you’re going to keep the name private, the possibility for abuse is enormous.”

Ackerman also shines a light on how the far right played an outsized role in domestic terrorism before and after 9/11, reminding us of Timothy McVeigh and the Oklahoma City bombing, teasing out McVeigh’s ties to other white nationalists.

The attack on the US Capitol on 6 January this year is one more chapter in the story. Trump falsely claimed Antifa, leftwing radicals, were the real culprits. The roster of those under indictment reveals a very different story.

In congressional testimony in April, Merrick Garland, the attorney general, and Alejandro Mayorkas, the homeland security secretary, described “racially or ethnically motivated violent extremists” as the greatest domestic threat. Garland also singled out “those who advocate for the superiority of the white race”.

Chad Wolf, Trump’s acting homeland security chief, made a similar point last fall. Of course, his boss wasn’t listening.

Ackerman delves meticulously into the blowback resulting from the war on terror. Unfortunately, he downplays how the grudges and enmities of the old country have been magnified by key social forces, immigration chief among them.

Joe Biden, then vice-president, condemned the Boston Marathon bombers as “knock-off jihadists”. But Dzhokhar and Tamerlan Tsarnaev had received asylum. The immigrant population stands near a record high and the US fertility rate is in retrograde. On the right, that is a combustible combination. When Tucker Carlson is in Hungary, singing the praises of Viktor Orbán, the past is never too far away.

In his effort to draw as straight a line as possible between the war on terror and the rise of Trump, Ackerman can overplay his hand. Racism, nativism and disdain for the other were not the sole drivers of Trump’s win, much as Islamophobia was not the sole cause of the Iraq war, a conflict Ackerman acknowledges he initially supported.

Trump’s victory was also about an uneven economic recovery and, when it came to America’s wars, who did the fighting and dying. Overwhelmingly, it wasn’t the offspring of coastal elites. In 2016, there was a notable correlation between battlefield casualties and support for Trump.

According to Douglas L Kriner of Boston University and Francis X Shen of the University of Minnesota, “Wisconsin, Pennsylvania and Michigan could very well have been winners for [Hillary] Clinton if their war casualties were lower.” Residents of red states are more than 20% more likely to join the military. Denizens of blue America punch way above their weight when it comes to going to college.

Ackerman, a graduate of New York’s hyper-meritocratic Bronx High School of Science, bares his own class prejudices much in the way Clinton did at a notorious Wall Street fundraiser. Hillary dunked on the “Deplorables”. Ackerman goes after those he sees as socially undesirable.

In his telling, Trump is “an amalgam of no less than four of the worst kinds of New Yorkers”. According to his taxonomy, those are “outer-borough whites”, wealth vampires, dignity-free media strivers and landlords.

This year, many of those “outer-borough whites” voted for a Black candidate, Eric Adams, in the Democratic mayoral primary. Adams, Brooklyn’s borough president, is a former police captain.

The real estate industry is a critical part of the city economy. Strivers have been here since the Dutch came onshore. As for “wealth vampires” – come on, really?

The city’s economy reels. Murder is way up. Law and order matters. Ackerman’s disdain is misdirected.

Nationally, the security state is not going to just disappear. But not all is gloom and doom. In a break with Obama and Trump, the Biden White House has pledged to no longer go gunning for reporters over leaks.

The US is leaving Afghanistan. Unlike Trump, Biden was not dissuaded. And last Wednesday, the Senate foreign relations committee voted to end the 1991 and 2002 authorizations of use of military force in Iraq. Even the leviathan can budge.