This is exactly what these goofs don't understand.
BLM is predicated on breaking the law freely while expecting average uninvolved citizens to follow the law.
If you can't lawfully defend your neighborhood from a literal terrorist organizations then there's absolutely nothing stopping a home owner from dressing in all black, going down to the woodline of their neighborhood and letting off anything from a few well placed shots to a 60 round drum at "peaceful protestors' then disappearing into the night.
The reality is unless you tell someone, or you wore something people recognized there's very little chance of getting caught. Catch your brass as it ejects, go swap out your barrel / upper, and what evidence do the police have?
Nothing
This is doubly true if your AR15 is chambered in .223 and you carry out this mindcraft attack with a .300 BLK upper that suddenly disappears.
Again i'm not advocating violence, but this is the reality when people wake up to the law not being on their side and literally exactly what happens in other countries that fell to mob rule.