Couple things you're not mentioning...
He was walking around the store carrying this gun, never mind it is a BB gun, people don't know that.
He was waving it around, and walking through aisles....
No, he wasn't waving it around at people -- that part is a LIE, flat out.
There were tons of surveillance cameras in the Walmart and NONE of them depicted the man doing anything you described -- and in some of the footage he was around several customers and none of them were alarmed or ran away like he was some armed maniac
What the f*ck for??
He is a 22 year old father, why the hell is he acting like such a complete moron???
Who the **** walks around a crowded store waving a gun around??.
This is why I have ZERO respect for people like you -- I guarantee you would you call this woman and man a patriot for practicing their 2a rights for carrying her gun in a crowded store -- by the way, the guy who was killed at the Walmart, was shot in an open carry state.
But folks like you sure love to demonize the person who was killed -- but when that man more resembles someone who looks like you, then of course that person has a right to carry that weapon around.