Personally unless being threatened with a weapon I would not work for a concern that condones shoving an old person back on their head, a likely outcome by the way. No, he was not reaching for a weapon with his hand full of phone, or other. Yes, he was and probably will always be a pain in the ass. Police training and big city union rules and protections are the problem. I could not imagine shoving an old man like that. Why was it so easy and natural for them? See above.
You are full of crap. He was an antifa agitator, proven by other videos. He was scanning the police communication devices so other antifa terrorists could track them. He had been causing problems previously and other protesters had already tried to get him to leave, identifying him as an infiltrator trying to cause violence.
If you or I were pushed backwards, if we could not keep our footing, we would land on our butts, with hands or elbows by our side. It is the human instinct to elevate the head as we fall backwards. The only way he should have hit his head is if he was unconscious when he fell backwards. This was a flop that turned out badly for him.
The shoving was problematic but not rendering him first aid is inexcusable, esp. after the George Floyd tragedy, and I’m a conservative. PS: My son was a federal police officer who aided two men who had heart attacks. There are many good policemen, but a few rotten apples have helped to destroy a lot of public trust in them.
He was barely touched as he was impeding the officers.