One reason I have not read yet: scapegoating. In my country, back in the early 2000s it was the "terrorists" who made it possible to enforce a few unpopular and unconstitutional policies. Nowadays, it is the "immigrants" who take our jobs (we have a job shortage), housing (which was sold off to investors) and health care (which was sold off to investors). Point to a group that cannot defend itself and people will vote in your favor.
Point to a group that cannot defend itself and people will vote in your favor
"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 Johnson.