The problem isn't so much the existence of the Second Amendment as the fetishization of it -- the notion that you're almost obligated to buy a gun, and that society will collapse if you're not allowed to buy a semi-auto rifle or otherwise have even the slightest increase in gun control.
I don't think anyone is so naive as to think that gun regulations will completely avoid violence, but there such a thing as deciding when a price is too high. I'm pretty sure that schools having to prepare their kids for "active shooter" situations is an indication the price is too steep. And I'm sorry, but there are numerous countries where tighter restrictions on legal access reduce the levels of gun violence.
You know that perennial
Onion article "'no way to prevent this,' says only nation where this regularly happens?" That's you. Instead of actually doing something, you feign helplessness.