1) My brother was a motorcycle cop 40-50 years ago and had a runner. He pulled over another bike for some reason and as he just got to the bike the rider took off. Being that long ago it wouldn't have been as much competition for a police Harley and he did catch him. From then on he had the other rider drop the keys on the ground before he got off his bike. You don't have to tackle a stopped bike.
2) Like a lot of people, the cop didn't know a lot about bikes. How much parts cost, what a bent lever looks like and the cost to fix, paint or replace a fairing. He didn't know how to pick up a bike. If it was a heavy cruiser he would have gotten a well deserved sore back.
3) Settling out damages: It depends on whether the police admit fault and settle without dispute or decide to fight it. That may depend on the claim. Any damage to the bike is legit. Did the helmet suffer impact, if yes it goes on the shopping list. If the damage is recorded does it affect bike value? The dirty term the insurers don't like to hear "Diminished Value" is worth listing.
If the police want to flex their muscles either for the sake of it or because they feel the bill is padded you will be up against the city's very powerful legal firm. They can run up a huge tab and pass it onto the tax payers without them even noticing. You will need a very knowledgeable lawyer and it comes out of your pocket.
There is no excuse for the tackle. Rider! Shut off your bike, drop the keys on the ground and step onto the sidewalk.
I have never had a cop handle my wallet. They refuse to accept it and tell ME to remove my papers and only hand them what is asked for.
This needs to be reported to the SIU. Yeah not a lot of damage in the world scheme but getting away with it could lead to escalation.