I don't know if "Justice" and "Death" are friends

Did you seen all the people who lives in prison?... Not just here, in some countries the population are over the capacity of these prisons.
And some people think this "what if we kill the criminals" mmmm "because they live with our taxes" "cause they're evil" "cause they're useless and they can hurt or kill somebody" well, a lot of arguments.
The things aren't easy, we have the glorious "human rights" a very young universal law and a not friendly thing for me...Religion (i respect the believers) they have a conception of life based on their beliefs, the divine punishment, god, satan, paradise or hell... If hell exists, then kill all that rats, because satan will torture them for all the eternity, later we will be the next, isn't easy talking about this, there are too many factors in this.

Are we with the rights to kill somebody? or just the rights doesn't exists, just a concept? i see lions killing lion puppies, they have the rights? We are animals too, but with the difference that we have a conception of a lot of things, our associative thought, a superior thing of us... I think that the justified killing (good argument) is a good option.

First think that we have a law for death sentence, right, we eliminate a lot of "garbage", but people are people, can be nice or true monsters, i mean, the ethic of too much people are a shame... I just see in this world, corrupt politicians, business men, attorneys, people with obscene quantities of money and the poorest ethic ever seen... With a death sentence, is like a double-edged weapon, used for good and evil, killing who deserves it and killing innocent people, is the raw truth.
If some criminal want to kill your mom in front of you, what do you do? call the police while she's been murdered, and leaving this horrible mess to the justice? How you would know who is guilty or not? if they condemn an innocent, and very later it's known that he or she is innocent, what we would do, that human being is dead, point of no return, what we can do? Divine punishment? punishment from the UN? Social punishment? Nothing... This is such a complex topic.

I'm sure of a thing, if i see some important person for me affected, wounded, rapped or something like that, i'm not gonna be think it twice, i will kill that criminal, i don't care...is the same reaction that i would have if i see a couple of burglars in my house, i will kill them, don't think i'm a crazy man... It's a reasonable thought, is my life (a good stuff) or their lifes, come on.
I don't know, but "Justice" and "Death aren't friends who walk to a bar for a couple of beers and talk about their lifes, i think that they're just companions of work, like:
-Justice: good morning...
-Death: Morning justice...

End.