I understand the question being asked here but what came to my mind first was why would he not shame his friend for being evil. How can someone who is friends with someone for years not know they are evil? But I guess that is a good question because as it stands the friend is a huge threat and I do believe whether he is an honorary Uncle or not, he has stated he is a threat. So do you become pro-active and eliminate the threat first? That is a real tough question. As a decent human being, if you know someone is a threat to others the right thing to do is to alert the proper authorities. Yet if SHTF and those proper authorities are not in place to deal with the threat, do you become the judge and jury? Do you eliminate the threat before he can strike anyone or do you make plans for when he arrives on your door step? I have to think on this because it is a very troubling scenario.