Yeah, that is called "sitting duck syndrome" by those who preach taking guns away from everyone in the mistaken hope that that will end these types of events.  This guy had a long record of instability.  Nothing was done about it.  The "PC" crowd wants to bury their heads in the sand thinking that it will just go away.  It won't.  If not guns, then cars, etc.  The more passive people become the more these things will occur.  It is time to be vigilant.  Gov't alone cannot stop it, the people need to be aware and educated and trained in what to do when things start.  There is no other way to stop it except to push back harder in every way possible.  For one thing, the guys name should be ID'd only once.  Not over and over again for weeks on the disaster-porn news.  That alone would take away what these murderers crave- attention.  Don't give it to them.  Firing squads are another option.  Stop glamorizing these people and they will eventually go away. Same thing in North Korea.