We were both tripping. Fairly recent acquaintances, I had no idea about his views, until it came up during conversation. We ended up talking about it for several hours. I stayed non-judgemental and just kept probing with questions about why he feels this way. Eventually he realised he was really just angry about the failures in his own life and the local community he was from. He'd picked up a bad media diet(neocon youtube...) and found some kind of relief I suppose in directing his anger at others. There was a lot of crying. He even thanked me the next day.

I think that's about as detailed as I can get without revealing private information.

It was a remarkable experience and fundamentally changed the way I think about the human mind, extreme political views, political dialogue, and most of all how therapy should work.