Another excerpt about the Communist-led violence in Hollywood in the late 1940's, from Peter Schweizer's Reagan's War: The Epic Story of His Forty Year Struggle and Final Triumph Over Communism:
After one take of a beach scene, Reagan was summoned to the telephone. When he picked up the receiver, a voice he didn't recognize threatened to see to it that he never made films again. If he continued to oppose the CSU strike, the caller said, "a squad" would disfigure his face with acid.
It was the first of many threats as the CSU and their Communist Party allies grew desperate to force SAG into line. Reagan hired guards to watch his kids. "I have been looking over my shoulder when I go down the street," he told a SAG meeting.
Blaney Matthews was so concerned that he took the unusual step of making sure that Reagan got a permit to pack a .32 Smith & Wesson. From the time he got up in the morning to the time he went to bed, Reagan kept the pistol close and snug, holstered under his jacket. When he went to sleep, he kept it at his bedside. But his nights were fitful. Jane Wyman would awaken and find him sitting up in bed at two in the morning, holding the gun because he had heard an unusual sound. The dreamland he had been living in only a few months earlier was turning into a nightmare.