The term 'Red Guard Leader' refers to Mao Zedong, a Chinese revolutionary and political leader who was the founding father of the People's Republic of China. He was the leader of the Red Guards, a group of young people who were mobilized by Mao during the Cultural Revolution in China from 1966 to 1976. Mao was a key figure in the Chinese Communist Party and is widely regarded as one of the most influential figures of the 20th century.