Another view of the NYPD cruisers

That looks perfectly intentional.

A law enforcement source told CBS News that the vehicles in the video were "trapped" and that the crowd was throwing bricks and rocks, and that there was a bag on fire sitting on top of one of the vehicles. The source said the officers did not "ram" the protesters, but that they were "trying to go forward and escape."

  CBS

Utter bullshit. There was no burning bag. And there was plenty of room to back up if they wanted to "escape".

At a late-night news conference, New York City Mayor Bill de Blasio addressed the video, saying that although it was "upsetting," it's also "inappropriate for protesters to surround a police vehicle and threaten police officers."

"That's wrong on its face," de Blasio said. "I'm not going to blame officers who are trying to deal with absolutely impossible situation ... If a police officer is in that situation, they have to get out of that situation. The video was upsetting, and I wish the officers hadn't done that, but I also understood that they didn't start the situation."

Recall DeBlasio.