That's so incredibly fucked up. You can't defend your business? Shit, with a mob of looters and arsonists running wild, I'd say the guy has an excellent "he feared for his life" defense. Duty to retreat? He was presumably inside his own store. Where the fuck was he supposed to retreat to? The bathroom in the back? What happens when the rioters torch the building? He just burns up in the resulting inferno?

Whole lotta WTF here.