Why exactly is executing literal retards a fucked up thing to do? Retards are a massive drain on the resources of society who will give absolutely nothing back. They are walking, talking, shitting, drooling money pits who are not just a burden on their families but the entirety of society. If they are docile and don't hurt anyone, sure let them live, but if they commit atrocious crimes I personally do not give one single fuck if they have the intelligence of a toddler or not, they should face the consequences. I can't think of a single group of people less likely to be able to be rehabilitated.