This is NOT Self-defense

You can't fire at someone because you are ticked off. Clerk shoots as shoplifter flees, no one hit

Police charged Williams with reckless endangerment and unlawful possession of a weapon. He was released on bond.

Williams said he fired the shot as a warning and didn't intend to hit the shoplifter.

You only shoot (at) someone if you want to stop them. Dead. Not as a warning. He narrowly missed a car and the bullet went across the street and into another business.

I am all in favor of self-defense, but shooting someone in the back, who is running away from you, doesn't usually qualify.