The fact is we all had shooting games as we grew. I do feel the games these days are bit to graphic. As time goes on people will always try to push things further and further, and seem to get punished less. Because of human rights acts. Why don't we give a teachers, public works, whoever tazers? They could at least keep subject at bay and it's non lethal. Its like paying for uninsured motorist on your insurance policy.
While the conscious mind is fully aware to whether something is present or just a pixelated image, neuroscientists say some important parts of the brain can't separate fiction from reality. There are parts of the brain that pertain to social activity but don't receive information about what is right or wrong, real or fake. When these parts of the brain receive any violent information, they might store it in the hippocampus (the memory), thus letting it reside in the brain. Obviously this can eventually effect one's idea of what is normal or unusual and possibly erase the mental separation of good and bad. I think everyone should be cautious of what their children take in, considering all this runs the risk of creating a violent mind.
I think that parents should monitor the games their children play and what they watch. I don't think the government should ban violent video games but I don't support kids that are 16 and under playing them. Children can't make proper judgement and I think parents should teach their kids love and peace and not violence or hate. If a child is neglected or abused it can cause them to be vicious murderers.
I do not believe first person shooters were a factor in most of the mass shootings since Columbine; I think the single thread that links them is mental dysfunction, some severe, but almost always it could have been reasonably foreseen. This means we knew there was a risk but took no action. What barriers to action do we need to overcome? What treatment and what rules do we need to institute to reduce the risk and to keep those with mental dysfunction away from handguns?