Communists think that it possible to build communism by killing of «bad» (rich) people, until good people, liberated from burden of capitalism, will build communism. In their imagination, it's OK to kill 30% of population to build heaven for them.
Sounds like what I imagine when looking of a cliché about what people learn in the US. Are you from the US? And is it really what you're being taught there? Genuinely interested.
