Comment by FeepingCreature

Yes, it's a balancing act. It should be noted that abusers also tend to be very good at painting people dangerous to them as abusers, so it's difficult to start with. Generally speaking you look at a person talking about vegetarianism and decision theory to some other people in a corner, and you don't usually think "this will end in them murdering their landlord with a samurai sword." We at least managed to ban her from the community after the suicides, which was still well before she became famous, and before that I can only say that it's just very hard to notice that you have to ban a person from a community if she's mainly keeping to herself and talking.