that is not evidence that guns are the cause.....prove it is not the behavior at schools. Ok, lets ban all knives in the U.S., good luck cutting your steak.
Can you please read this
article. It is about how public schools are not great at socialization, could this be the reason behind school shootings, or is the weapon used the cause in your opinion?
If you want to know something else....look at what happened when alcohol was illegal.....Do you honestly think it will be any different with guns?
I personally don't have guns, but I know the significance of the 2nd Amendment. If you look at the facts, you are going to take guns away from the police, then another Al Capone will show up.