It is an analog of the song and its purpose, which is getting a political martyr so the martyr and Cause can be glorified, and the other side can be demonized and therefore further advance the Cause politically.
In most cities, though, the police aren't really with that political program, because they can see at street level who the bad actors are and what a bunch of vicious punks the 'Antifa' disruptors are, so I look to see the political agenda fail where the rubber actually meets the road.