He considers himself to be a Libertarian Marxist. Luxemburg sought to maintain social democracy as a revolutionary Marxist creed. Lenin's writings became orthodoxy for all Marxist historians. Marxist feminism is a philosophical variant of feminism that incorporates and extends Marxist theory. He has been described as "ruthless" and a "radical Marxist". Lenin sought to explain the phenomenon of antisemitism in Marxist terms. In accordance with Marxist theory, the government also promoted atheism and materialism. He said he wasn't a Marxist but a pacifist. Bernstein was also strongly opposed to dogmatism within the Marxist movement. Before 1914, Lenin's views were largely in accordance with mainstream European Marxist orthodoxy. It revolved largely around the concept of power, rejecting both Marxist and Freudian theory. Kabila had declared himself a Marxist and an admirer of Mao Zedong. Some later Japanese historians reframed Himiko in terms of Marxist historiography. The status of humanism in Marxist thought has been quite contentious. Marxist sociology is the study of sociology from a Marxist perspective.