It is called summarizing. If you wanted a more in depth explanation, might I suggest simply asking for one instead of being an a-hole. Unless you are incapable of doing that?
Go listen to the interview, he lays out his whole revenge model and you can listen to it yourself better than I could explain it. In short, he was going to kill a bunch of innocent people to punish his mom for all the terrible things she did to him raising him.
In a California incident a guy stabbed and shot girls because he was upset women would not date him (he was an incel) and he took his revenge against innocent women he found.
Workplace shootings are often found to be related to having been fired or laid off.
I would put all of those into the category of unique revenge because they are often not trying to murder the person who wronged them but instead murder a bunch of innocent people.
If you can't see the difference between an angry spouse killing their partner over infidelity vs killing 20 innocent children at a school I don't see how you can ever grow to understand this.
Ok, Dr. Phil. Compare:
the motives of a school mass shooter who targets random, innocent people
to the motives of a shooter who targets random, innocent people attending a concert in Vegas,
and the motives of a shooter who targets random, innocent people attending a church.
The act itself has nothing to do with the motive, The underlying motive is THE PERSON IS A PSYCHOPATH and doesn't care who gets hurt.
If the motive is revenge, then they would target the ones who wronged them, correct? If they choose to shoot random students in a hallway instead, that's the act of a psychopath -- no direct line between the dead and the motive.
Same for the concert and church shooters. No direct line between whatever transgression the shooter is basing the act on. Just random, innocent people who happen to be there.
They are all psychopaths. There are no "unique" OR common motives driving them. They simply have no reason other than to kill -- and who they kill doesn't matter to them.
In most instances, the real motive is suicide, but they are too cowardly to off themselves. So, they choose a time and place to be killed by the police. Killing others is just incidental to the actual intent -- self destruction.
Now, if you want to delve into the INDIVIDUAL (not unique) circumstances that made them suicidal, that's fine. But the motive to commit mass murder is not unique among them.
The Newtown shooter may be an obvious example. He was diagnosed and treated for mental illness/autism. He, along with other school shooters, left behind evidence/statements that they wanted to be famous -- to achieve a record-breaking body count on their way out of existence. That in itself is not a motive, but a goal that gave them a rationalized objective to reach for in their ultimate desire to stop breathing themselves. Did he seek revenge? Don't know. With his mental problems, I can only guess he was bullied at school. Kids are cruel, and anyone they see as different or weak will be targets of some pretty nasty stuff.
I've said it before, video games don't make people killers, but they can have a desensitizing effect that makes killing less repulsive. The military uses the same type of desensitizing techniques to train soldiers to kill other human beings -- an act any rational human being would find difficult.
None of this is "unique" to mass shooters, though. I lived in Oklahoma after college. My wife and I had a game we played every night when the news came on -- to see who could guess the number of deaths reported in that half hour. Seemed like drug deals and robberies topped the motive category. There were also the occasional psychopath who came along and committed mass murder.
The term Going Postal was first coined with the mass murder just above my apartment complex in Edmond.
The Sirloin Stockade steak house murder trial was just starting when we arrived in OK. It was said to be a robbery that happened just as the restaurant closed. All employees and remaining guests were marched into the walk-in fridge and executed.
There was the Wynn's IGA 24 hour supermarket, also in Edmond. It was robbery orchestrated by a former employee. Took the 3 employees working that 3AM shift to a back room and executed them.
https://www.newson6.com/story/5e3683962f69d76f620987b8/man-executed-for-1985-grocery-store-murdersThere was rarely a night when a body wasn't found in a park, in a wooded area, or in an abandoned house.
There was a couple that went on a multi-state crime spree and happened to come through our area. An Air Force Airman was going to visit a friend, but in the apartment parking area, she was abducted by the couple for her car and any money or credit cards she had. Police found her body under an abandoned house days later.
Every single one was a psychopath. It doesn't matter if they were 15 or 50. They should be executed, because little can be learned from them and their "unique motives" which might prevent the next such crime.
The human condition is what it is. You can't raise kids outside of their family's influence, and even if you could, we see what foster care and orphanages can produce. Some people should never be allowed to reproduce, but that's something that has and will always happen.
Are all psychopaths killers? Of course not. Many are productive leaders. They rise quickly in their chosen professions -- lawyers, politicians, military leaders, etc. -- with much of the credit going to their psychopathy. When you are a narcissistic megalomaniac with little regard for the feelings of others or the effects you have on them, it's easier to focus on what you want and say "fu" to everyone else.
i bet you even have worked with or do work with at least one or two psychopaths, and if you tried, you'd be able to document the things they do that are common traits for psychopaths.