OPD gave us 5 minutes to disperse, and then attacked the crowd with tear gas, flash grenades, and rubber bullets. I was there until that point, and I can testify that it was a peaceful march until the police attacked it.
Moreover, they just happened to begin firing tear gas into the crowd right after the two major media outlets that were covering it with live feeds turned off their cameras. That coincidence was quite a coincidence. ABC and CBS later claimed their helicopters had to refuel, and they did show footage from later. But what a coincidence that they turned off their cameras just before the police attacked? And that their helicopters ran out of gas at precisely the same time, that time?