It opposes collectivism, totalitarianism, anarchism and communism. Thatcher was a strong critic of communism, Marxism and socialism. References to the concepts of anarchism, socialism, communism and capitalism permeate the book. Many sought answers in alternative ideologies such as communism and fascism. These groups emphasize opposition to both communism and capitalism. Similarly, anarchism enjoys complex relationships with ideologies such as Marxism, communism, collectivism and trade unionism. It placed itself between communism and social democracy. Some took sides according to international capitalism or international communism. Trudeau's Harvard dissertation was on the topic of Marxism, communism and Christianity. Singh was attracted to anarchism and communism. It develops into an all-embracing indictment of the corruption of communism and Soviet Russia. Weinberger took the lead in implementing a rollback strategy against Soviet communism. Christian communism is a form of religious communism based on Christianity. These included rights for women - see Feminism in Chinese Communism. The leading theorists of Communism opposed prostitution.