On the motives, can we include "long simmering resentments unknown to us"
And do we need to include RRL incident the kids going after CRjr and showing up around his home. I understand what your saying I think. We need to simplify.
My thoughts are that a pretty large proportion of the human population have long-simmering resentments against various other people. Fortunately, healthy, sane people wouldn't massacre an extended family in this manner, as a result of their resentment.
There might be a flare-up of rage from bad blood, and one or two people killed, but the killer is usually caught because they weren't thinking straight, they were so consumed by emotion.
But for something as carefully carried out as this, I think these people had to be sociopaths, people who don't feel much emotion for anyone.
Apparently, sociopaths carry a long-standing resentment against the world.https://www.psychologytoday.com/us/...g-the-sociopath-cause-motivation-relationship .
But the people they kill just happen to be in the sociopath's cross hairs, the motive makes no sense, murder is all out of proportion to the motive.
Like school shootings: some kid's having a bad day, he kills a bunch of classmates. Or guys like Douglas Garland, an ex-con who resented that Alvin Liknes didn't credit him on a patent, for a little work he'd done on a useless device that never made any money, but Garland stewed about it for years before killing Liknes and his family. http://nationalpost.com/opinion/chr...rial-dont-anger-the-psychopaths-in-your-midst
Or Charles Merritt, who allegedly had a gambling addiction and stole $20,000 from the McStay business so he could go on a spree at the casinos. Who'd have thought that was a good reason to kill a family?