What's really nuts is the number of execution methods that have been instituted with the intent of being "merciful" or "humane" or whatever. Guillotine, then we found out oxygen stays in the brain, it's gruesome, and there's nothing remotely humane about it. Electrocution? Awful, painful, etc. Lethal injection? The same plus often botched. I look for states governed by these sadistic kind of people to start cycling through hanging and electrocution and the like, should lethal injection chemicals be too difficult to obtain, until we can get rid of capital punishment.
We just needed to drop state-sponsored revenge killing.