I just watched the full dash/body cam video. The way he held his hand looked like a weapon, you don't hold the Koran like that. If you haven't read that is what his wife said he was holding. Also the pic is grainy but looks like an ankle holster.
I listened to the wife's audio in the car yesterday and it sure sounds like she is telling Keith not to do it at the end like she knows he will get out with a gun.
As a legally armed person, I think the police should be working much harder on less leathal weapons in case I run into the wrong "respect my authority" officer. But if the police version of this is true, the wife and daughter should be held accountable for all the damage done during the protests/riots.