I do not agree. He was white, and one of "their" kids were injured. That is reason enough to kill him, and, of course, take his money, jewelry, phone, and tools, if they were really angry.
In New York, a Jewish driver hitting a black teen resulted in the "Crown Heights Riot" pogrom against the ultra-orthodox community in Brooklyn.
Just recently at fast-food chicken shack style place, a woman in the parking lot was obviously dying of cardiac arrest. A pack of “youths” entered her car-not to render aid, nor to call 911, but to rob her of everything moveable, including her wedding ring. She died there.