Outspoken libertarians aren’t going to be bullied in college - outspoken anything in college generally leads to people ignoring you. College students that think they’re being bullied most likely attribute normal behavior to bullying - just like incels treat normal human interactions as impediments to getting laid.
Blood libel is anti-Semitic.
Just because you don’t understand these code phrases or dog whistles doesn’t mean anti-Semitism doesn’t exist.