Entrapment is illegal.
When they show that the cop provoked the fight, and that the other cops were set up, outside with scopes on the target, they will lose the battle.
As I have said in previous posts, I am not in favor of biker gangs. Especially outlaw gangs. But, as a life long MC rider I can tell you that if you are not bothering these guys, they leave “civilians” alone. Shooting up a parking lot in a suburban area is not their MO. It is very rare that their stuff flows into the arena of public view.
Bingo.