“The Left is already melting down about my book!” the Missouri senator tweeted on its release date. He fired back at political writer Gilad Edelman, who panned the book, tweeting that it “couches a familiar critique of Big Tech within a political-historical argument that gets almost every important point completely wrong.”

“Decades of unchecked data collection have given Big Tech more targeted control over Americans’ daily lives than any company or government in the world,” the book’s description also says.

Hawley argues that to reverse course, “progressives’ mistakes of the past” need to be corrected and the influence of corporate and political elites must be curbed.

“The time is ripe to overcome the tyranny of Big Tech by reshaping the business and legal landscape of the digital world,” the book’s description says.

“Phony alert — this genius is railing against “big tech” while selling his book on “big tech.” Please cancel this loser,” Swalwell wrote on Twitter. Hawley has so far ignored the congressman’s tweet.

On Twitter Wednesday, Hawley described “a real life example” of what he called “Big Tech’s tyranny”—a decision by Facebook’s Oversight Board to uphold former President Donald Trump’s suspension from the platform.

“A fake @Facebook court decides @Facebook can do whatever @Facebook wants, in this case, suspending Donald Trump w/o process or standards. That’s what monopolies do. Break them up,” the senator tweeted.

Donald Trump Jr., the former president’s oldest son, publicly endorsed Hawley’s book on Twitter a day before its release. “Josh has been a true warrior on this subject and we need more in the GOP to get with it. Check it out and make sure you’re all informed about what’s really going on,” he tweeted.

The Tyranny of Tech was originally going to be published by Simon & Schuster, but the publisher decided against it after U.S. Capitol riot on January 6. Hawley, who had echoed Donald Trump’s baseless claims of election fraud and objected to the counting of some of Joe Biden’s Electoral College votes that day, called the publisher’s decision “Orwellian.”

Newsweek reached out to Hawley’s office for further comment but did not hear back before publication.