Gavin McInnes, a white supremacist was speaking at New York University on 2/2/17. Students were peacefully protesting outside the Kimmel Center, when suddenly they were told by New York Police they'd be arrested if they didn't disperse. Students were then forced to cross the street for fear of being arrested.
You can see it happening in this video.
Sound volume fluctuates; my apologies. If you increase the volume at the beginning you can hear the police's first order to disperse before protesters cross the street. The NYPD violated these students' rights to assemble.