The Justice system
OK, so we know in the DC universe the justice system is woefully inadequate - this is necessary for if every villain got their comeuppance there would be far fewer surviving.
However, on this thread let's list the ways in which different villains should be penalised and agree or disagree.
I'll start.
Would you say that the Joker should be fastened to a rack and lowered very slowly into a vat of caustic alkali, say a foot every hour - or that he should be fastened to a rack and suspended above a pack of mad and ravenous dogs just out of reach and lowered a little bit every hour?