While I was in college. My junior year ROTC cadets were stoned and had bottles and snowballs thrown at them if they wore their uniforms. This was 1966 at UMass/Amherst, which has long ago descended into a hell-hole of screeching militant lesbians, violent Social Justice majors, Bill Ayers wannabes chairing all social science and humanities departments, and forced student funding of anti-military groups. UMass is now $hit.
....and around that same time, the law exempted teachers from the draft. Many went into that field in order to avoid conscription, stayed, and rose through the ranks leading to the profusion of anti-American sentiment we see in academia today.