Rosa Luxemburg
After WW1 Luxemburg helped establish the German Communist Party (KDP). She organised a socialist uprising in Germany but was killed by a right-wing group called the Freikorps. Rosa Luxemburg made many new communist ideas that continue to influence communism today. Rosa Luxemburg supported the Russian Revolution led by Lenin and Trotsky, but she saw them both as making undemocratic mistakes in organizing what was supposed to be a more democratic nation. She also insisted the freedom of assembly, freedom of the press, freedom of speech and abolition of death penalty. In 1913 she published an essay "The Accumulation of Capital" that urges that capital accumulation causes the imperialism.