Sorry… you think because this is nowhere near what was happening in 1968, that somehow excuses police actions? How did you even make that connection?
The point is that the media has been spending weeks hyping this up as though it is going to be just as tumultuous and it just hasn’t been. They wanted it to be so people would pay attention to the news and they’ve been pretty much disappointed that it isn’t happening. Some of them are angry it isn’t happening.
I think you need to go read up on what happened in 1968 at the DNC. It started with the cops murdering a teenager who was protesting. By the end, there were hundreds of people in hospitals.