Sometimes (more times than not) I think we're far too 'humane' anymore. We'd be better off in these cases where there's no question of guilt and no remorse of just taking them out to the tree in the town square and hanging them. Even that's too good for 'em.
Surely there is a less wasteful solution to just hanging them. We could hunt them. Pit them against each other for entertainment. We could study their brains after they expire. Force them to build the border wall. Use them in human pharmaceutical trials.
Complacent people these days have no idea what is going on around them and the horrors that await a failed society. They should be hung and left to rot in the middle of the city for all to see what happens.
Just another dreamer...