Wonderfullife your views sicken me, you are as bad in my opinion as the people you are talking about.
Parading these people in public, executing them, shocking,barbaric, and going back to the dark ages. I would hate to live in a society like this, and who would bear the brunt if this barbarity, I suspect the poor, the mentally ill, ethnic minorities ect.
I admit that at times I have thought some crimes are so horrific they should be executed,but it is wrong and it is vengeful. Also it will never be safe especially if there is corruption, and people with money who can afford a expensive legal team, while the poor cannot.
Your views are medieval and I would hate to live in a society like that.