The Chron won't link to Fox.
OK... that’s the one I was looking for.
I can’t say it convinces me of anything one way or another. Guy#1 (the guy who got punched) was standing up... and turned and moved to his left to come up behind another cop dealing with somebody else. Then this cop (the punching one) left his guy#2 on the ground he was dealing with, came over and grabbed guy#1 pulling him back from the others and back up where he was with his back to the wall. There’s some scuffling that is admittedly a little fuzzy. I can’t tell what the guy#1 was doing with his hands, but he was grabbing either at the cop or his equipment. The the cop punches him pretty hard to the face, then steps back... the guy settles down to a sitting position.
Sure, maybe the cop was out of hand. But I’m not sure that this video says that. The important part is what you can’t see. You can’t really see what the guy was doing with his hands. Seems like that makes a difference.