On May 24, 1951, Schulberg "testified voluntarily before [HUAC] that he became a Communist during the late Nineteen Thirties but quit the party when it tried to dictate what he should write". He named John Howard Lawson, one of the Hollywood Ten, as trying to pressure him to write under party guidance, and "named names" of Waldo Salt, Ring Lardner Jr., Lester Cole, John Bright, Paul Jarrico, Gordon Kahn, writers; Herbert Biberman, director; and Meta Reis Rosenberg, agent.

He then wrote "On the Waterfront" to justify the naming of names. And Kazan, also one who voluntarily named names, directed it. A wonderful screenplay and film, but a very dark motive behind it.

Why is that a "dark motive"? Especially if that's what he believed? You call it "justifying"; he'd probably say he was "exposing".

As Kazan said, 'Secrecy serves the communists.' Most importantly, in historical terms, no one can argue that Kazan and Schulberg were wiser than their former comrades and on the side of history.