Those Ice agents are violent. Going to a confrontation with them while armed is suicide. Simple as that.
I’d be violent as Fck too if I had all those shtheads blowing whistles and trying to run me down. Those cops were keyed up, it was an extremely volatile scene and that goof shows up, starts fighting with them and as soon as they saw the Gun, it was over for him. He and he alone is responsible for his own death.