Complex sentence: In 1952, during the Red Scare, Finley was fired from his teaching job at Rutgers University; in 1954, had been summoned by the Senate Internal Security Subcommittee and asked whether he had ever been a member of the Communist Party.
Split into simpler sentences: In 1952, during the Red Scare, Finley was fired from his teaching job at Rutgers University. He had been summoned by the Senate Internal Security Subcommittee and asked whether he had ever been a member of the Communist Party.