If they are actually hostile to coworkers, fire them, no problems, but if their personal beliefs don't interfere at work, you absolutely should not fire them.

If they are actually hostile to coworkers, fire them, no problems, but if their personal beliefs don't interfere at work, you absolutely should not fire them. To be clearer of my perspective: So if they are nice to their coworkers(jew, PoC, or whatever) but then after work goes and hangs out a sign that says "I hate Jews(or PoC, or whatever)" they should still be allowed to work the next day, assuming they continue to not let their personal beliefs interfere with work. Clearly this person is a moron, and needs to change their personal beliefs, but that's a totally separate issue, unrelated to work.