In 1940, following a debate with an Australian communist, Schwarz felt compelled to study communist ideology. Eventually he became a recognised expert on Marxist-Leninist philosophy. He founded and was chairman of the not-for-profit Christian Anti-Communism Crusade (CACC), based originally in Sydney and later in Long Beach, California. He held that position until the late 1990s. During his time with the CACC, Schwarz gave lectures and seminars across the United States on the subject of communism, placing an emphasis on the role of education in understanding Marxism-Leninism from that movement's source documents by Karl Marx, Vladimir Lenin, Leon Trotsky, Mao Zedong, and others. Under Schwarz's leadership, the CACC financed an orphanage in India for underprivileged children.