David Horowitz
David Horowitz was a New Left activist in the 1960s, the son of radical parents, who underwent a political conversion and became an conservative activist. He started what is now the David Horowitz Freedom Foundation, originally targeted at popular culture. Activities of the foundation are argued, from the right, as preserving academic freedom, and from the left, as attacking academic freedom. One coalition, Free Exchange on Campus, has gone to the extent of building a "Horowitz Checker" into its webpage.
Activities on the Left
He was an editor of Ramparts magazine. With Peter Collier, he wrote three biographies of dynasties, on the Rockefellers, Kennedys and Fords, but then wrote "looking back in anger at their days in the New Left, he and Collier wrote Destructive Generation (1989), a chronicle of their second thoughts about the 60s.