Meth traffickers (just to name one variety) certainly have zero concern for the well-being of humankind. I kept reminding myself, while watching "Breaking Bad," that there were no heroes. It is improper to root for Heisenberg. He was as bad a villain as any of the others in the show, and in reality, it was a show about villains. Really the only good guy was the D.E.A. agent, Hank, a sympathetic figure.
I think the death penalty does have a spiritual component to it, though, and there is something ancient and venerable about a life for a life. If a crime does not result in death, then perhaps, the death penalty should not be applied. I suppose in the case of drug trafficking, the outcome of the crime is not fully known, and death might be assumed.
However, the law should not be promiscuous in assigning death for crimes. I think Trump reflects a widespread dissatisfaction with the current system, in which we have a large population of prisoners that are hard to manage and expensive to manage. That is a complicated problem, but not every complicated problem has a simple solution, as Trump and his followers would prefer. My own solution to the problem is prevention--prevent people who commit crimes from ever being born. Eugenics. But, that is politically incorrect, condemned by both left and right, and associated with the most unpleasant regimes. I think that society is certainly moving, rapidly and inevitably, in the direction of eugenics, however, and anyone paying attention must agree. Eugenics will come about, not because of politics, law, or force, but because people simply want what is best for themselves and for their children. Self-interest will ensure that eugenics is practiced--voluntarily. And that will result, hopefully, in a reduction in crime.