Okay, wow, your samples are far and above what I expected - I thought you'd merely put up with Torvalds-style directness, or perhaps simply had a couple of Russian coworkers. I didn't think that people in the real world actually called their coworkers retards, or threw chairs through windows.

I now think you were perfectly justified in asking for those people to be fired and quitting - I'd have probably tacked on a discreet phone call to the police, and maybe scraped together enough cash to get a lawyer to threaten a lawsuit.