Remember the Fort Hood shootings, when the crazed Islamist killed a bunch of people? How many of us know that Major Hasan had the ability to kill so many people because of a government rule limiting gun possession on military bases? In other words, the government created a safe zone for the killer.
This is why “gun-free” zones are stupid at best and more likely to create dangerous environments. If you’re a vile, evil, or crazy person, that’s where you’ll go because nobody can shoot back.
The cartoon is superb, but I also recommend this post reviewing a Cato study on the use of guns in self defense. And these posts about Chicago and New York City will probably get you upset.