In regards to these young leftist thugs, they are already being arrested across this nation on college campuses as the leftist administrators are being overruled by their boards of directors and by local authorities.
But as far as the Political Left in general goes; yes, it could happen; but most likely they will simply lose most of their political power and national influence because people are getting fed up with ALL of this insane leftist generated and supported crapola. Meh . . . but sometimes I am wrong about these things. Time will tell.