Here is a chunk out of wikipedia about that. "
The production and release of
High Noon intersected with the
Second Red Scare in the United States and the
Korean War. In 1951, during production of the film, screenwriter
Carl Foreman was summoned before the
House Un-American Activities Committee (HUAC) during its investigation of "Communist propaganda and influence" in the
motion picture industry. Foreman had once been a member of the
Communist Party, but he declined to identify fellow members or anyone he suspected of current membership. As a result, he was labeled an "uncooperative witness" by the committee, making him vulnerable to
blacklisting by the movie industry.
[10]
After his refusal to name names was made public, Foreman's production partner
Stanley Kramer demanded an immediate dissolution of their partnership. As a signatory to the production loan, Foreman remained with the
High Noon project; but before the film's release, he sold his partnership share to Kramer and moved to Britain, knowing that he would not find further work in the United States.
[10] Kramer later asserted that he had ended their partnership because Foreman had threatened to falsely name him to HUAC as a Communist. Foreman said that Kramer feared damage to his own career due to "guilt by association". Foreman was indeed blacklisted by the Hollywood studios due to the "uncooperative witness" label along with pressure from
Columbia Pictures president
Harry Cohn,
MPA president
John Wayne, and
Los Angeles Times gossip columnist Hedda Hopper.
[10]"
And it goes on, "
John Wayne was originally offered the lead role in the film, but refused it because he believed that Foreman's story was an obvious allegory against
blacklisting, which he actively supported. Later, he told an interviewer that he would "never regret having helped run Foreman out of the country"." Way to go, John.