1) Don't resist arrest. Even unlawful ones. Save it for the judge, file a civil rights case afterwards.
2) Police training in NYC is obviously non-existent. They had no idea how to restrain the guy so they could cuff him. They need to be reprimanded and police training in restraint reviewed. They carry pepper spray. They could probably have sprayed him rather than pummeling him into submission.
3) Before passing judgment on the cops I wouldn't mind hearing their version of what happened.
2) They probably KNEW, but figured it was much more fun to just pound on him! You know, work out the stress by beating him to a pulp! Pepper spray just doesn't quite give that level of satisfaction, though torturing someone with a Tazer is close. They can't do it on the streets anymore...too many camera phones. They figured they were in the clear.
And you know this because?
Damn you are one stupid shit. Fortunately I doubt you'll hang around too long. Most stupid people like you feel outclassed by the superior intellects of Chris or RDean and leave.