Stop the media from publicizing the shooter's exploits all over the TV, newspapers, social media, etc. and making the shooter famous. This only creates "Charlie Copycat" wanting the same exposure. Enforce the laws already on the books. There are no quick solutions here, but these knee jerk responses and hurried proposals are not going to solve these problems. Start with the basics by bringing back discipline in the school systems and quit coddling these kids. Demand performance and compliance and make known the consequences of disobedience.
Require judges to actually penalize those found guilty instead of giving them PBJ and letting them walk. Maybe it's time we stop making excuses and start making people accountable for their actions.

Okay, off my soap box now - - Go away winter - - I need some WIND THERAPY!!!