Especially if it’s their own property.
Does the gov’t think it’s “against the law” to protect their buildings?
Well....never mind...Benghazi comes to mind /s
Funny how the Ferguson PTB saw fit to post a gauntlet of riot-gear attired police around their own station and the firehouse ... But for the rest of us insignificant peasants ... too bad ... Oh, and do not even attempt to organize your own defensive perimeter - or we’ll arrest you, for your refusal to be victimized by the jackasses “in charge” of doing absolutely nothing to “protect and serve you,” the taxpayer.
Lethal force can’t be used by an individual to protect property - just for self defense. Even then you have to be in fear for your life or the life of others.
LEOs get more leeway, but even then, the better be in fear for their life - look at Officer Wilson.