The whole issue of gun violence and legislative actions can get, shall I say, "heated," and is as complex of an issue as it comes. So sometimes it's a good idea to simplify things with an analogy. I once did so with a "play" about "gum control" in the classroom.
But here's a remarkably better analogy... CATS! More specifically, an animated video using cats instead of guns:
"But my crazy cat-lady neighbor wants everybody to think it's okay to own a cheetah!"