Just to review:
Convicted felon with a gun in his possession, already illegal
Assault with a deadly weapon, already illegal
Possession of a firearm while intoxicated, already illegal in most locales
Felony menacing, already illegal
So, exactly how do the antis imagine that a "Gun Free" sign is actually accomplishing anything?
Someone with proper training could have tripped this guy's circuit breaker...
As to the guy in Greeley, announcing to the world that you're going to be carrying smacks of a publicity stunt, as they say "there's no such thing as bad publicity". Death threats or no, if he was truly concerned about his safety at school board meetings, he'd have either declined to attend, or carried and kept his mouth shut. If someone is really intent on harming this flake, they now know to do it from a distance and by surprise. My guess is that by publicizing the death threats and making an issue out of his carrying, what he was trying to accomplish was attract attention to his radio station, as people would listen just to see what was so toxic in his message....