As a lib-left Christian who's political beliefs mostly align with the Democratic Party (except i'm pro-life and neutral about lgbtq), I completely agree with you. Matthew 24:24 states that there will be many false christs ahead of you, and I believe that white nationalism is one of them. Look up the podcast Complicated-ish, made by a Christian rapper, and find the episode "Christianity Vs. Nationalism". That podcast really explains the difference between being a Christian and being a nationalist. As a final note, I consider people like those at Westboro Baptist Church to be a disgrace to my religion. I mean, how is anyone ever going to want to convert to Christianity if we literally carry signs that say "God hates you"?