I think you just answered your own question.........Destruction of property does not allow for use of deadly force because property can be either repaired or replaced.......
Personally, if I'm caught in the midst of a riot situation, I'm getting the hell out of there because if I were to brandish my firearm there is a good chance that I could be mistaken for an armed rioter..........
That depends where you live.
Texas Penal Code.
Sec. 9.42. DEADLY FORCE TO PROTECT PROPERTY. A person is justified in using deadly force against another to protect land or tangible, movable property:
(1) if he would be justified in using force against the other under Section 9.41; and
(2) when and to the degree he reasonably believes the deadly force is immediately necessary:
(A) to prevent the other’s imminent commission of arson, burglary, robbery, aggravated robbery, theft during the nighttime, or criminal mischief during the nighttime; or
(B) to prevent the other who is fleeing immediately after committing burglary, robbery, aggravated robbery, or theft during the nighttime from escaping with the property; and
(3) he reasonably believes that:
(A) the land or property cannot be protected or recovered by any other means; or
(B) the use of force other than deadly force to protect or recover the land or property would expose the actor or another to a substantial risk of death or serious bodily injury.
It do in Texas. Deadly force may be used to prevent Arson at any time, but also to prevent criminal mischief during the nighttime. Also theft during the nighttime. Most of this stuff seems to occur during the nighttime. So...
You're quite likely to need to at least show a weapon to get out there.
Especially if you are of a different ethnicity than the rioters.
Sure, you should get out of there, if you can, by stealth, but often that's not going to be possible.