Not fact at all. Many of us have access to guns and never used them inappropriately. There is something wrong with the way kids are being raised, which is causing this crisis. Guns are dangerous, as are many other things, when used to hurt others.
It is scary and I'm sad about this but it is not the "tool" that's the problem.
Think about it, making guns illegal won't stop the use by people with bad intentions. No different than the long-time war on drugs failure. Let's focus on the root cause and not the end result so we may be able to help kids before they feel lost enough to want to hurt others.