The point is people will find ways to kill people no matter what. If all guns are capable of this, is the answer to ban all guns? Good luck. Do we make guns harder to acquire? We can implement laws on top of laws on top of laws, but as long as guns are in our society there will be a way to obtain them. See prohibition. Guns have been around for years, but only recently have we as a people begun using them to create mass tragedies.
The common denominator is not guns, it's mentally ill people. Now that we've identified the underlying cause of these tragedies, what is the solution? More therapy? Maybe. But I think we need to start from the beginning. I think the biggest issue is how our children are being raised. What is contributing to the mentally ill that want to shoot up the school or commit X tragedy? Violent movies, tv shows, and video games all glorify the hero who is invincible and kills at will. Do you think that puts ideas in the heads of mentally ill people? For someone who is never the hero, never has anything good going in their life, the thought of being a hero in your own story for once would be the greatest thing ever.
If you don't think violent media influences these mentally ill people, imagine a world where we didn't have movies like John Wick and video games like Call of Duty. Where else would the idea that you could use weapons to kill tens of people with come from? I used to think it was a crazy idea that these things contributed to mass tragedies. Why, I have no inclination to shoot up a school after I watch one of those movies or play one of those games. But, I can now see how the idea can be put in the head of someone who is mentally ill. Especially someone who has no support system and nobody to tell them what's right from wrong.
But now we find ourselves in the same position - do we ban video games and violent movies? That won't work either. We need to be more present in our young people's lives. We need to do a better job at teaching them what's right and what's wrong, even if you don't think it needs to be said. It starts with our schools and with our parenting. We've raised a generation of neglected youth and it's starting to show.