SCHOOL ATTACK BY KNIFE WIELDING ATTACKER WHO IGNORED THE NO WEAPONS SIGNS!!!

The NO WEAPONS SIGNS had no effect on this violent attacker of over 20 people at a Pittsburg Pa. High school. Why do these signs not work? These killers just do not want to obey the law! Should we Post them in bigger print or make them flashing neon? We must somehow get these insane violent people to understand what a "Weapon Free Zone" is and then they won't enter schools and try to kill everyone... right? That is what our public officials tell us, perhaps we need to register those "Assault Knives" and create a law of some sort... something, we must do something, anything, so we can feel good that we did something! Then we can feel safer again and trust that 911 is all we need... even though we know in our heart that we have failed to protect our children, once again.