You guys ever hear of "suicide by cop"? They intend to die by being shot .If the cops don't do it, they do it themselves. Sure, they are going to kill people in the meantime. I am not convinced that an armed person would make much difference at the scene. In fact, unless the shooter is an idiot, the shooter would target him first if he can identify him. If he can't, then anybody in the crowd may have a gun concealed, whether it is a "no gun zone" or not. How the hell is anyone going to enforce a "no gun zone" against a "good" person carrying a concealed weapon? Your whole argument makes no sense at all.
Because good people obey the law moron. If you carry a concealed carry gun into a school zone you can be punished as a misdemeanor, and lose your gun rights, have to go to court, and pay a lawyer....you can also lose your job if you get a felony for it......so law abiding people have a lot to lose by not obeying the law and there are all kinds of cops who are gun grabbers and prosecutors and judges too, just waiting to throw the book at a law abiding citizen who carries a gun.
For example, the woman in New Jersey...she was from Pennsylvania and had a concealed carry permit. She drove into New Jersey not realizing that her permit was no good in New Jersey....she was stopped for speeding or another traffic infraction and she did as she was trained to do in Penn. she told the cop she was a lawful concealed carrier and that she had a weapon on her person.....
She was arrested by the officer for felony weapon possessiion in the state of New Jersey, and faced going to prison for 3 years, getting a felony conviction and as a nurse, with that felony conviction she would have lost her job.....it took action by Chris Christie to keep her out of jail......and to clear her record...
That is why law abiding people don't carry guns into gun free zones.
And in Oregon...if you were caught with a concealed carry gun as a student, you would be expelled, and as an employee, you would be fired....even though it is legal to carry a gun on a university campus.
so that is why law abiding people don't carry in gun free zones.