Actually, gun ownership needs to be totally outlawed in the USA, just like it is in most countries.

This incident is the reality of people being allowed to own guns.   People don't use them to defend themselves against criminals.  In the real world, people use guns to kill their own family members, their friends, and other innocent people.    

This is the truth of how guns are really being used in our society    And the reason why they need to be eliminated.