I’ve watched too many YouTube videos to consider using a stun gun for anything but inflicting pain on a sneering protestor.
My backup is a collapsible baton.
I used to have a couple (handy little items if you know where to hit). Also, was trained in a PR24 baton while Shore Patrol in the Navy. That's all good if you can use it like in the movies, but since most of us older or non-trained folks can't, zapping there ass actually works. They fall to the ground. Then beat feet! Ha!