If society collectively hates rapist. why are we not allowed to kill them?

Everyone hates rapist. Danny Masterson. Brock Turner. Harvey winstine. We all hate them right? So why are we not allowed to torture and kill them?
What would you do if you were to meet a rapist and wouldn’t get in trouble for what you would do to them.
Updates
+1 y
You all act like most rapist have been falsely accused
If society collectively hates rapist. why are we not allowed to kill them?
Post Opinion