Mark Levin’s ‘American Marxism’ Ends 2021 As Top-Selling Adult Trade Book Of The YearPosted on December 24, 2021 American Marxism It’s official: After debuting at No. 1 on the New York Times bestseller list, “American Marxism” by Radio Hall of Famer and BlazeTV host Mark Levin was the top-selling adult trade book in 2021.