I think that's a great idea. So great in fact that the idea should be expanded. We should ban children. Clearly there are parents who are abusive and abandon their children. We could similarly prevent this abuse by simply banning the practice of having them.

San Franciscans are truely progressive and serve as a inspiration for all.

As said, it's a cluster munition. If I remember correctly, the "fins" are called flutes. Given that each bomblet is self contained and not wired to the main device, the flutes serve to arm the bomblet via centripetal force. After the bomblets are ejected the flutes cause the bomblets to spin.

In other news:

8 year old allowed into swimming pool and drown...
Ban swimming pools.
etc.
etc.
ad nauseum

Dangerous activities warrant supervision, duh.