Body: "Socialism, communism, and anarchism" is various political and economical systems that counteract the idea of capitalism.
Why study "Socialism, communism, and anarchism"? To understand various political and economical systems. To understand the differences from mostly capitalist and Democratic systems in place.
Professionals of "Socialism, communism, and anarchism" include Karl Marx. Pierre-Joseph Proudhon. Upton Sinclair.
Some subfields in "Socialism, communism, and anarchism" include What is the difference between socialism, communism and anarchism. Where are these systems currently in place. What is the history of these systems.