This is when a Bad Guy picks on the wrong person, especially if it’s a Bad Guy With a Gun…
“Assault Rifle” is Newspeak for “I don’t know anything about firearms, but I think that rifle looks scary.”
You've probably seen this drawing online before. It belongs to one Plognark, an artist with a groovy portfolio on DeviantArt.
Plognark is generous enough to license the image with Creative Commons. If you like it, why not buy a T-shirt?