That's certainly a major truth!
Without audio it's difficult to really know for certain what happened.
Was the victim saying "Now I'm gonna kick your butt!" ?? Or was he saying "Leave my girl friend alone!" ?? Or was he saying nothing?
What, if anything, did the shooter say?
There's little, basically none, justification for coming up and knocking someone to the ground. It's terrible that a parking space argument ended with a death.