I don’t think anyone had time to establish anything. Doubt the cop know who he was. Like a kid with buck fever, shoot and then check to see if it has horns.
I do find Crawford's actions very odd. Apparently picking the rifle up in passing and going to a secluded section of the store and conversing for some time while unsafely handling the weapon.
This wasn't a pair of boots or a roll of paper towels.
I find it interesting that he was arrested for ag robbery with a concealed weapon last year.