Quite simple where guns are accessible to mentally unstable people and anyone can own one then these things will happen , and these guns are legally owned most of the time . We even have gun crime in this country so if someone wanted to carry out these crimes they'd find away but because of the death sentence in most states this is a deterrent although thousands on death row , perhaps if we had the death penalty these crimes might be less . A tragic waste of innocent life , our thoughts are with the children's family's and all that have lost loved ones in yet another gun crime . Am very surprised that Muslim radicals don't actually do more crimes in America as far more easy to access guns . Perhaps the right to bare arms might be restricted in the future , but I doubt it