How to confront my (29M) friend (29M) about his beliefs?
We've been friends for almost a decade, got to know him from debate club in college. I'm Asian and he's White. He's become way more extremist over the years. His parents are also very radical, probably indoctrinated him. The thing is, he is also one of the most polite people I know.
We spoke about politics recently, and he mentioned his desire to make America a white christian nation through genocide. He thinks God/the founding fathers gave christians the right to eradicate all other races and religions. He's always been MAGA, but it's my first time hearing this opinion from him. He was spewing stereotypes about all the other minority races, but very conspicuously nothing about asians. Obviously, I can guess his actual beliefs.
From my self-interested perspective, he's been nothing but polite, generous, and a good friend. From an ethical perspective, I strongly disagree with every single thing he stands for.
Is there an argument I can use to help him see the error in his beliefs? I don't want to cut him off because I don't think that's helping anybody. Or is there another course of action I should take?