If someone in my home is daily screaming at me, shitting on the floor, stealing things and threatening children - they're going. Roommate, relative, doesn't matter. They're out, or I am.

Someone's claim to live in a good community ends when they start actively destroying that community day after day. You get the community you work to build; you don't get to live in my wonderful community every day while you daily do horrifying things to ruin it.

This is the only way good communities can exist.