They're upset that the people do not use the same play book as Antifa or BLM. So they have to create pressure to push them into it. They think violence is the excuse they need to shut down the protest. There have been numerous false-flag episodes of violence already, but the protesters shut it down without the need for police to respond. The powers that be had better be warned not to push this in that direction. "If you sow the wind, you reap the whirlwind." They can't survive the tornado they are ginning up.