Radical leftist groups, hoping to recreate the disruptions of the 1968 Chicago convention, are planning big protests at the Democratic convention in Denver.
The spectacle in Chicago basically destroyed the Democratic progressive movement and put Richard Nixon in the White House.
Have you noticed that certain ideological groups are so purist that they do not seem to want to win, since they can be purer in opposition than with the inevitable compromises of actually holding power? This does not just pertain to politics.