So, if you see a man carrying an AR 15 down the road

[taxi]

50. This is their albatross

Not to do with a recent trial, but going forward the armed persons will find themselves in the figurative crosshairs of conflicting beliefs.

An armed person, realizing himself soon to be threatened, begins to react and gets shot.
An armed person, not realizing himself soon to be threatened, can only draw the weapon with intent to kill.

Any vigilante can ferret out an unknown vigalante by causing him to react. A reaction that reveals he may be armed will lead to him being immediately shot, however, if he doesn't counter the threat he will still be shot anyway. So if he shoots it is murder, if he reacts he gets shot, if he doesn't react he gets shot.

The brave men, afraid to use their weapons, may soon know they've been had.