They had a very good reason. That violent thug attacked the man with the shotgun and tried to take it away from him.
That is a f***ing *VERY GOOD REASON* to shoot that stupid criminal.
Vigilantism is a dumbass move especially if the person at worst was doing a stakeout to look for places to rob, at best the wrong place, wrong time.....
So you think it's OK to chase and then shoot someone that simply was in the neighborhood looking hinckey?
I shed no tears for him, once he went for the gun all bets are off, never should have gotten that far.