In 2011, HarperCollins published Shapiro's fourth book, Primetime Propaganda The True Hollywood Story of How the Left Took Over Your TV, in which Shapiro argues that Hollywood has a left-wing agenda that it actively promotes through prime-time entertainment programming. In the book, the producers of Happy Days and M*A*S*H say they pursued a pro-pacifist, anti-Vietnam-War agenda in those series.[13] The same year Primetime Propaganda came out, Shapiro became a fellow at the David Horowitz Freedom Center.[14]