He was trying to exterminate that part of himself and was driven by unexpressed self-hate.
Just like the pols who want you to think they are straight who go after LGBTQ to throw off suspicion so you would never expect them to be part of what their expressed hate tries to hide. But in fact that is the best clue you can ever get to understanding wackadoodles like that. They are what they hate and there is no way they can expiate that hate other than trying to eliminate others who are just like them. But it doesn't work so they keep trying and trying and trying and they always fail.
For any of you out there who fit that? We are not fooled. We know what you are. A coward.