Some guy wanders into the Holocaust Museum and starts shooting, wounds a guard but two other guards shoot back and wound the guy. He’s taken into custody. (h/t to SayUncle)

But how could this happen? Washington D.C. has such strict gun laws, they should have stopped this nutjob! Why didn’t the laws work?! Oh that’s right, criminals and nutjobs don’t obey the law.

So there you are, family vacationing, going on a museum tour, then some wacko loses it and starts killing people. Bad things can happen at any time without any warning and where you probably least expect or want it to happen. This is why it’s good to be prepared, always. It’s no guarantee, but the more you can do to have the odds in your favor, why would you do anything less? And why would anyone (private citizens, elected officials, etc.) want to restrict your ability to do so?