Homeless; I respectfully diagree. Guns are a problem precisely because they are implements of mass destruction. Semi-automatic weapons shoot lots of bullets in short periods of time. I could kill a lot more people a lot faster with a gun than I could with a club, or a couple rolls of quarters in a sock. Good ole Dylan and Eric could not have blown away all those kids that quickly with knives, rocks or aarsenic...and a killer with anything other than a gun tends to be a lot easier to disarm than someone with, oh, a 2x4, or a hypo full or potassium...
I myself would be likely to try and disarm a psycho with a knife, risking injury to myself, if it meant helping someone else. There is a chance I would be hurt or killed, but the risk is worth it. If the psycho has a gun, I could probably not even get close enough to him to do anything...he could kill me from a few feet or yards away. Knives are not projectiles; bullets are. I really do not see how you can argue that guns are on the same level of lethal effect as any other weapon.