Colorado is a rare state that permits lawful use of deadly force in cases of aggravated arson (or soon to be), my best description: Guy with a lit Molotov cocktail with his arm pulled back, ready to throw, facing your building. Reasonable belief of imminent serious bodily harm is not necessary in that rare circumstance. Nothing keeps you from paying $50,000 in attorney fees to present that defense, however.

Something that I've always failed to understand with these riots is if there's a community that is protesting a perception that they are disproportionately comprised of criminals; burning looting and burglarizing is quite counterproductive. Just like Gahndi said when nonviolently protesting:
"lets get us some TV's and hair extensions bitches!"
That's the core issue why this fails to ever be a successful or meaningful protest of anything, because too many of their protesters are oxymorons.