The term 'Marx Follower' can be summarized by two crossword solutions: ISM (3 letters) and IST (3 letters). ISM stands for 'Ideology of Socialism and Marxism', which is a set of beliefs based on the writings of Karl Marx, a German philosopher, economist, sociologist, journalist, and revolutionary socialist. IST stands for 'International Socialism Theory', which is a theory that states that the working class should unite to overthrow capitalism and create a socialist society. Both ISM and IST are related to the Marxist ideology, which emphasizes the importance of class struggle and the need for a revolution to bring about a more equitable society.