Paris Shootings and Explosions Kill Over 100, Police Say

I don't understand how can you talk about ISIS, Nazis and Communists in the same sentence? Communism has nothing to do with violence compared to ISIS and Nazis...

Edit: Why downvotes? Idea of communism does not propose violence, Nazis and ISIS on the other hand do.

There has been plenty of communist-inspired violent terrorism. Germany's RAF, Italy's Red Brigade, Japan's United Red Army, Peru's Shining Path, Columbia's FARC, Sri Lanka's Tamil Tigers, etc. etc. Saying these are not real communists is just a No True Scotsman. As soon as people start believing in utopias there's a danger that they will cross a line.