But that's actually, legitimately the definition of Communism. That's how Marx defined it. Second sentence from Wikipedia: "Karl Marx, the father of communist thought, posited that communism would be the final stage in society, which would be achieved through a proletarian revolution"
Here's a map of everywhere that tried Communism - http://en.wikipedia.org/wiki/File:Sino-Soviet_split_1980.svg
Violence in every single place. Lots of it. Horrible stuff.
> Your comment is a piece of trite propaganda.
The book that laid out Communism - the Communist Manifesto - directly calls for violence. Every significant attempt at Communism has included violence. At this point, Communism includes violence. If you're not in favor of rioting and violence and re-education, you're doing something other than Communism as was written by the founder of the movement and every real life implementation of it.
Pointing this out is not propaganda, and it's not trite. Trying to make Communism happen has literally created more misery and destruction than any other movement in history, and it's not even really close. People need to know about and remember the Khmer Rouge killing fields, they need to know about the Great Leap Forwards and Cultural Revolution, they need to know what Marx actually wrote in his books, they need to know where Communism leads and what it really is. It's a horrible thing. Putting it down is not trite - it's important that it's remembered for what it is, and never allowed to surface again, for the same reasons it's important that fascism doesn't surface again.