- Marxism
- Theory developed by Karl Marx and Friedrich Engels
- Emphasizes conflict between working class and ruling capitalist class
- Believes history progresses through stages driven by material conditions
- Leninism
- Adaption of Marxism by Vladimir Lenin, in context of Russian Revolution in 1917
- Introduced concept of vanguard party
- Intellectuals leading revolution on behalf of proletariat
- Saw an authoritarian state as necessary
- Communism
- Envisions classless, stateless society with production collectively owned
- Marx saw it as final stage of societal development, following socialism
- Socialism
- Aims to reduce inequality by redistributing wealth
- Ensures basic needs of everyone are met
- Can exist in more democratic or authoritarian forms