In a home defense situation, a shotgun is the way to go against anything. 12 gauge, 00 buckshot, old and tried, effective as fuck, yet safer than rifles (or slugs). If you're afraid of thin walls, do a 4 instead of 00.

On the street, I don't see any realistic option other than a concealable handgun. I mean, if legal, you can carry a rifle in your car I guess. In case, I don't know, you find yourself in the middle of a Hamas-style attack all of a sudden?