RSBM
Right. Something that is often overlooked in these cases is the opportunistic nature of the offending.
As you say, its a common trope - they get away on the road, anonymous, with no controls or responsibilities. None of their usual support structures.
Several young lads I came up with would load up on booze, jump in their cars and cruise for parties and fights every weekend. The same nihilistic behaviour common with so many young men. Beatings, brawls and sexual assaults was what these charming guys were into.
Now because no one died, no one is puzzling over their relationships with their mothers, what video games they played, or lack of a strong authority figure.
But one incident in particular which became an urban legend, the victim easily could have died having been thrown through a window. Within a few years they grew out of this stuff. Another fact that any District Court judge is well aware of in sentencing these cases
Now our charming gentleman had no particular official pact to go out and try to do some murders. Rather they were abusive individuals who discovered a taste for it during their exploits and their relative freedom at the weekends. Especially they discovered they were powerful young men and no one could easily stop them.
So yeah - there are 100s of stories of young men on the prowl who end up doing a murder one night.
It's one of the older tragedies and I don't see a special meaning in it.
Of course I am not shocked to discover trouble in their family lives because ordinarily, kids from loving, functional families, don't go on the prowl with weapons, looking to hurt people. Yet the boys I knew were from OK middle class families with no abusive stuff and there was just not much you could really put your finger on as to why they were so excited to beat the daylights out of other boys they could catch up with. The group dynamic was maybe the main part of it.
Anthony Burgess's A Clock Work Orange from all the way back in 1962 pondered these very questions. I don't see anymore of an answer in 2019 than I saw in 1986
And some people are born to kill. Quite often, they themselves only realise this when they, in actual fact, and often as a great surprise to themselves , kill someone. Could be a child, could be a woman, could be a man.. They can go all their life, probably a short life, unknowing their own propensities, in a conscious way, although , it isn't improbable that deep down, they know. They do know they could kill, they just don't know it for a fact, more a knowing of the potential within themselves.
It is what it is. All the background in the world doesn't alter any of the outcomes. Good home, bad home, loving wise mother, ditzy nutso mother, clever father , absent dingbat father, tall, short, ugly, good looking, rich, poor, clever , dumb, it all evens out in the end. None of these factors change the inherent desire , born within, to want to kill.
The same story could be told of Sebastian Burns, money, education, status, college, clever, good looking ( in a creepy way ) , the exact opposite of the violin-inducing bathos of the Story of Bryer..
Ditto, the story of Sebastians partner, Atif. Money, status, education, health, ..
Same outcome, even worse, they were family anhilators, one by reality,, the other by proxy. They murdered people they knew, who loved them and cooked and cleaned and worked and educated them, and wiped their bottoms as babies.. .
but....
Same outcome. Put into motion the propensity, the potential they had within them to kill. Knowingly, unknowingly, same outcome.