Half of these cases are random shootings.

Guns need to be controlled.  Enough assult weapons, enough with guns.  Grow up and give up your guns.  That level of freedom is an unhealthy one.  Freedom should be tempered with justice and truth.  The truth is that violence is cyclical and these cycles need to be slowed by some force.  I believe that there are people who will stand up to this cyclical force of violence and make a difference.  I believe in you.  Believe in yourselves.