I have been to a few rallies/vigils/marches lately and all incidences of violence that I have witnessed either in person or through media has been instigated by the police. As far as I know,every documented case where a formerly peaceful crowd turns into chaos has been started with police shooting pepperspray, teargas, or whatever into the crowd.
I find it really hard to not come to the conclusion that the police is desperately trying to set a narrative to justify a history of violence by escalating more violence, but please, someone, restore my faith.
Realizing how angry the people are and how massively outnumbered they are they've decided to come out hard with violence in an attempt to squash the protests, which makes sense.
I don't think it would take much for the people to overcome the Law Enforcement with their overwhelming numbers. Once the news gets around that it's happened in one place, that will embolden others to do the same. I just hope it doesn't get wickedly violent if it happens.