Bring back the death penalty in this case

You are cherry picking your scriptures.
Jesus says turn the other cheek...he is speaking to a crowd of ordinary people, about forgiveness.
Judges says an eye for an eye .....because its about punishment fitting the crime for law keepers. We are supposed to trust those in this position to carry out the punishment fitting the crime.
But then as atheist you would love to poke any holes in the vengeance of almighty God and the instructions he gave to his Judges. But brush off God's vengeance at your peril.

Why would a thread about the death penalty be about abuse?

Empathy with survivors of abuse isn't a bad thing, you know.

It doesn’t need to specify. It’s a thread about the death penalty. If people are likely to get triggered by abuse they can employ personal responsibility and not open the thread.

I don't know and I don't care to be honest.
I am an atheist, there is no masterplan and in the case of certain crimes I don't particularly care why.

Where does this evil come from ?

You don't have to be religious to believe some people are evil, either.
I am an atheist and I certainly believe some people are evil.

It simply means that they are sadistic pieces of shit.

what case? You didn’t link anything

I agree completely. When we label something as 'evil' we remove the humanity of it and therefor avoid taking any responsibility. Nothing happens in a vaccum. Nothing is 'evil'. Theres always a sequence of events. Theres always reasons and its our duty to actually deal with those in order to prevent further awful things from happening.

The problem with the concept of evil is that it is a concept. It does not exist. It's a construct to be something the opposite of the "good God". So for an atheist like me, there is no God and therefore no evil. Because the supernatural does not exist.

My feeling is that using terms such as "evil" or "demonic", are really letting society off the hook. To say someone is "evil" is implying they are controlled by a non existent anti God entity. But it might be something in society that caused a person to be that way.

The problem is, there is often a total inability to recognise this fact, so the presumption is that people committing heinous acts are invariably "monsters", or "evil", and that's nothing more than a convenient distraction from the fact that they are human, and human beings sometimes do terrible things under certain circumstances. There is no such thing as evil, just unwell, aberrant, and atypical human beings.

I don't think this is true. The "certain circumstances" for Ian Huntley, for example, were probably just that he was sexually attracted to the ten-year-old girls who walked past his house, so he lured them in, assaulted them, and then killed them so they couldn't go to the police. Sounds pretty evil to me.

How is sexually abusing a baby not deliberate abuse?

YABU. You’re not emotional because you’re a Christian its because you’re a human

How is sexually abusing a baby not deliberate abuse?

I cannot fathom how anyone can abuse or kill a child

Mentally disturbed people, who are possibly also in the grip of addiction, do all sorts of things that mentally well, happy, fit and healthy people will not ordinarily do.

The problem is, there is often a total inability to recognise this fact, so the presumption is that people committing heinous acts are invariably "monsters", or "evil", and that's nothing more than a convenient distraction from the fact that they are human, and human beings sometimes do terrible things under certain circumstances. There is no such thing as evil, just unwell, aberrant, and atypical human beings.

How a mother can kill her baby with a hairdryer

The expert cited at the trial maintains that in his view the child was likely dead before the hairdryer ever came into the picture.

Preston was deliberately abused, and for sexual purposes. A quick read on this case suggests it wasn't deliberate abuse, so the outcome is the same, but intent is not.

It's not "mental gymnastics".

There is no such thing as "evil". It's an abstract concept dreamt up to explain things that are difficult to comprehend when the premise is the individual in question is no different to any normal person. This is the problem with the concept. Acts perceived as "evil" are not carried out by normal people, because normal people don't behave in these ways.

That repulsive pair who were shoving their penises in a baby’s throat…. Just a bit misunderstood were they and in need of some therapy?

This is a ridiculous leap to the absurd and that fact you posit it as a question shows you know how ridiculous it is, but for the sake of keeping it civil -

People who can do these sorts of things are not "misunderstood", they clearly have disordered and disturbed personalities, so no, "some therapy" isn't even going to touch the sides, and it's not a "mental health" issue either.

Perhaps you could go and read about Personality Disorders, Addiction and suchlike, and move away from dark ages nonsense like believing in "evil".

Oh and frankly, you can take your idiotic,offensive assertion that this is "excusing murderers" and ram it up your hoop.