Tolerance is a multi-lane road.  Just as you legitimize liberal intolerance so do the "white supremacists"  legitimize theirs.  Round and round the merry-go-round.  I put quotes on white supremacists because the phrase and its application to the protesters likely reflects a media projection rather than a reality.  I have not read any interviews with protesters wherein they are called upon to render an opinion as to whether they are white supremacists or generally consider non-whites inferior.  Without direct input from the protesters themselves, the label is fake news.