More will be revealed. My BET is: The retired Capt asked them to stop and they refused, an argument ensued, and a punch was thrown by the young father when the elderly man tried to take the phone away from one of them.
We shall see...
Where has my country gone?
CNN is reporting that words were exchanged then the man texting threw something into the shooters face. That is when the shooter fired. It appears the man texting threw popcorn in the shooters face. Still not an excuse to shot someone.