I am just fascinated by non-lethal weaponry.

The real thing to remember of course, is that they are by definition used against people who are in fact usually NOT being violent or using lethal force themselves.

If they were, the authorities would just shoot them.

Something to ponder: Why do you need to use ANY weapons on people who are not being violent?

Still, probably beats a boot to the head, or tazer shock.

Wonder what the long term effects are.