

This is just pure moralism that doesn’t engage with my argument. If you want my opinion though, I don’t think he should have been executed.
O’Bryan knew about capital punishment in his state’s legislation and probably took it into account like almost all murderers do. It did not prevent him from killing his son. You are making my case that the death penalty does not prevent murder. There are statistics from all over the world to back this up. Homicide rates are not at all well correlated with the severity of punishment. They are much better correlated with education and poverty rates.
What you are doing is this: You are taking one rather ugly case and using it to justify the status quo or populist sentiment. What if I talked about the five times a trans person attacked a woman? Does that justify how trans people are treated, how they are looked upon with doubt and disgust in this day and age? No. There are cases where whole families are doing well organised welfare fraud. Does that justify the rabidness with which states treat people in need – like significantly lowering payouts when a family member starts menial work? No. Do these couple of cases of welfare fraud deserve the attention they’re getting? I don’t think so.
That is mean to imply they haven’t. You are treating democracy as an end in it itself while ignoring the fact that systemically speaking large decisions, even when backed with a democratic vote, have strongly tended to side with capital. Brexit for example is a pretty good example of competition between the UK and Germany.