You have now moved far away from the original assertions that WE began discussing. These being the effectiveness of Holmes body armor and 'expecting' someone to 'counterattack' an assailant. I have not questioned your support of firearms as you have not taken a position until now.
As to more guns, video games and TV these are valid opinions of YOURS. I have no issue with more guns if those who engage in ‘more’ are willing, capable and responsible. I am certainly against putting a gun in the hand of every teacher. Given the environment and enough time I could reasonably predict one after having a stressful day to go ‘unhinged’ and become an assailant. As to ‘guns are not going to stop mass shootings’, stop…probably not but there is evidence that they can reduce the victim count. In the end no amount of gun control will eliminate the harm that can be inflicted by a hardened heart or creative mind. Consider the fall out if Lanza had entered the school with a 16oz Lipton tea bottle filled with gasoline and a match. Sure fewer kids may have been killed but those who weren’t could have been seriously burned and what would the outrage be then?