I know nothig of Faulk but nearly every organization which endorsed Wallace for president was a Soviet front. If Faulk was slandered, it is a shame. But that was not the norm. The threat was real and those who refused to testify were, almost to a person, on the side of the Soviet Union. The CPUSA was funded and directed by Moscow. Those who belonged knew that. They were agents of a foreign power.
What receives little attention today is that the real "witch-hunt" occurred a dozen years before McCarthy was elected to the Senate.
McCormick-Dickstein hearings of 1934 smeared many Americans by accusing them of being part of a fascist conspiracy to overthrow the US government.
Dickstein (D-NY) was on the payroll of the Soviet Union.
The 1934 hearing were only the start for Dickstein. On February 11, 1941 he took to the floor of the House of Representatives and alleged:
One hundred and ten fascist organizations in the United States have had, and have now the key to the back door of the Un-American Activities Committee!
Nice huh? Less than a year before we entered WWII, when America was helping the UK fight Nazism, Dickstein smeared decent Americans, some of whom, no doubt, would soon give their lives fighting fascism.
Dickstein himself had introduced, on Stalin's orders, the bill creating HCUA (HUAC). He was furious that his baby had turned on his comrades and was now investigating communists. And he was willing to smear anyone who hinted that communists had infiltrated the US government. This from a person who was selling visas to the Soviets when he chaired an immigration committee.
A similar parallel existed with Hollywood. The real Hollywood Blacklist happened before the testimony of the Hollywood Ten in the 1950s (who were, by the way, members of the Communist Party USA).The real blacklist denied jobs to those who were not communist sympathizers. And it was ugly. Rumors were floated to studio executives, many of whom were Jewish, that this writer or that actor supported Adolf Hitler. Talk about a career killer. More on the real Hollywood Blacklist here.