My alchoholic uncle has moved in with my family.?

So in 2009 my alchoholic uncle lost his job and his hoe/girlfriend kicked him out, so he moved in with my family. He was nice at first, then he gott another job, so instead of him putting his money to good use he started drinking and he turned into the asshole he is today. he stayed with my family until 2011 then he left. 2012 he came back and continued his life wastage, he only left again early last year with some middle aged hoe. He didnt even say thank you to my parents when he left, in fact he also took stuff that wasnt his to take.

I got a message from him a month ago, saying that he was being kicked out again and he wanted me to talk to my parents. I told him to find a nice shady spot under a tree. Anyway he started talking to my grandmother so she would pessure my mom into letting him come back, after weeks of arguements my mom allowed him to come back. He got here today, reeking of booze. i hate that man, he is selfish, greedy, racist, sexist, homophobic and he actually told me that he thinks hitler was in the right. i dont know what to do with him, my parents told me that if he causes problems with me, they will kick him out, so how do i get him to cause problems with me? this man does not deserve to have a roof over his head.

Sorry for the long question.