It's a mistake to classify ethical norms as politics. We just happen to be living in an of era populism where rampant unethical normalization is masquerading as politics.
How about try talking to that person, having a conversation, finding out that maybe, hey maybe, you actually agree on a lot of things? We did that in the Bush era, and that man's administration (Cheney, Rummy and Wolfie mostly) wanted to start a war with every nation in the middle east (and did get a pretty good start .. a start that Obama kept growing on mind you).
When you classify everyone as "the other," you are no better and maybe a little worse, because you don't allow yourself to listen.
I hope you are smart enough to recognize it can't work this way. There always have been politics and it was always "fight for America". Even before there was America, actually. If you want to have any civil society, you need to learn to engage with people who disagree with you. If you can't, both sides lose.