In the mid 1940's Fagin launched a one-man crusade against what he claimed was a "Red Conspiracy in Hollywood." Out of this crusade would come the Cinema Educational Guild. The culmination of this crusade would be the 1947 congressional hearings where more than 300 famous stars, writers, and directors from Hollywood, Radio, and TV were investigated, many of whom were blacklisted as Communists. These hearings resulted in the imprisonment of the Hollywood Ten.
Myron Coureval Fagan (October, 31 1887 - May, 12 1972) was a Jewish American writer, producer and director for film and theater. He arrived on Broadway in 1907, where he quickly became one of the youngest playwrights in American Theater. Over the years, he worked in the theater with such luminaries as Alla Nazimova, Douglas Fairbanks, and John Barrymore. He also directed plays for the top producers of the era such as Charles Frohman, David Belasco and others. Fagan also became the dramatic editor of The Associated Newspapers. Many of the actors including Humphrey Bogart, Brian Donlevy and Robert Ryan whom Fagin directed or who appeared in his plays or screen adaptions later became stars in Hollywood.
Also, would encourage all to Google his name and the title header for more info.