The effects of hypoxia on the body are well researched and have been for 80 years. Tell these anti death penalty jerks that the only humane way to kill people is to blow them up. Instantaneous, painless, foolproof.... i am being sarcastic, but for a reason These people would be against the death penalty no matter what the method. They just use opposition to the method as cover for their opposition to the death penalty itself.
CC
Y'gutt'a carry these things through