It's not exactly surprising that young black students have been protesting at Trump's rallies. After all, his highly charged rhetoric against immigration, Muslims and Black Lives Matter have made him a hero for white conservatives. Trump himself has even encouraged his supporters to remove hecklers.
What makes this Super Tuesday video so disturbing is how forceful those supporters are with the black woman. At one point as she's being escorted through the crowd, she is pushed and shoved by at least two different white men.