You've probably all seen those pictures of a gang of migrants beating up a pair of cops in Times Square. It's pretty disturbing, and there's no excuse for it.
Nonetheless it's instructive to see what really happened. The cops say the migrants were told to move because they were blocking the sidewalk. But bodycam footage clearly shows they weren't:
They're clustered over to one side, just hanging out. One of the cops tells them to "Vamos," and they all start walking away. A few seconds later one of the migrants stops to rearrange the stuff in his cart and the cop comes up behind him and tells him to keep moving. He does, but first turns around to tell the cop he looks like Ugly Betty. This pisses off the cops, who grab him and push him against the wall:
A few seconds later the cops are momentarily distracted and the guy tries to run away. The cops tackle him and that attracts his friends. This is when the melee starts.
Attacking cops is stupid and wrong, and you'd think a bunch of migrants would be especially aware of this. That said, nothing would have happened if (a) the cops had just left them alone, or (b) ignored the insult. Why didn't they?
You can see all the bodycam and surveillance footage here, along with a more detailed explanation of what happened.