A recent attitude is that anything you do is okay, you just need to please yourself. If whatever I do is okay, then there would be nothing wrong with me killing someone if it made me feel better about myself. Gun control isn't the answer. All the weapons used at the Columbine shooting were already illegal, not to mention that murder is illegal. If the guns are removed, something else will be used.
People murder with such things are cars, knives, rocks, bats, even their hands.
Would the next step be to remove those items as well. The reson that this isn't addressed in such a manner by the politicians would be because they can't do anything about it. The public demands that something be done, so the easy thing to do is to blame the guns. If the family is blamed, there is nothing the government can do. It then becomes the responsibility of every individual to solve the problem.