Courting racists is effective because disillusioned leftists DO TEND to metamorphose into racists and fascists over the long term. They get upset their party and politics are stagnating, get upset at the lack of political traction, and wind up eventually blaming other people. You see it more often in young people, but it definitely happens.
Trump has promised, in VERY few uncertain terms, to deliver a genocide here in the US. Mass deportations of immigrants were one of his big “to-dos” on day one, including deputizing National Guard and police units to assist ICE. This is combined with an AG hopeful who wants to “see Democrat politican’s bodies dragged through the streets”, and Steve Bannon, who helped author a document that basically plans to outlaw homosexuality, being transgender, and (probably) conversion camps, if not outright death camps. You can look all this up, it’s all been well reported on.
This is on top of Trump being close friends with Netanyahu, so congrats - by not voting, you voted for two genocides.