I've seen this happen a few times, some people use their race, sex or disability as a weapon. What they don't realise though is that they may be able to manipulate people in the short term but in the long term they will just make people distance themselves from them. Everyone will walk on eggshells to avoid an accusation. It's sure as hell not helping with integration when people are like that. I don't know how you kept from weeping with frustration. I think you did the right thing though.