That conservatism works by creating an "other" to blame all of their problems on. It's very comforting for a certain type of person. All of their problems exist because too many brown people live in their city. Same strategy has played out over and over again. Sometimes we have to put them down like Nazi Germany. Too often we let them off with a slap on the wrist like we do with Republicans every single election cycle regardless of the damage they do.
"If you can convince the lowest white man he's better than the best colored man, he won't notice you're picking his pocket. Hell, give him somebody to look down on, and he'll empty his pockets for you."
- Lyndon B. Johnson