We do not have any reliable information about exactly how the initial dispute unfolded—no video recording, no detailed, impartial eyewitness testimony. It reminds me of an adage I heard recently: "In every dispute there are three sides to the story: Side A, Side B...and the truth."
We don't know exactly what happened. In that light, it doesn't seem worth conjecturing on or discussing further.
Let's get on with our lives and—as is wise anyplace in the world—remain aware of our surroundings and tread lightly when out in public.