I am not speaking for anybody but the way a legal system works in any country, u have a jurisdiction according to which laws are laid.
Death penalty or no death penalty - a single person on his own cannot become the decision maker. the punishment has to be decided by the Law of the land.

Now according to me the death penalty is the least punishment what some people deserve!
For instance this father,
Who the hell told him that he cud do what he did,

I for one am sure that many in QL would agree with me that the death penalty is a very light punishment for such a person.