I'm still at a loss after lookin' this phrase up...
crabs-in-a-barrel
A syndrome where a group of like situated people hurt those in their community attempting to get ahead.
Often this is applied to people in an impoverished community where one person is starting to get ahead. The collective community becomes jealous or filled with a sense of self-loathing, so they find a way to pull that person back down to the community's level.
When harvesting crab, the crab as a group will pull down any crab that starts to climb out of the barrel in an attempt to be the first out of the barrel that holds them in, hence crabs-in-a-barrel.
This term is broadly associated with short-sighted, non-constructive thinking rather than a unified, long-term, constructive mentality. It is also often used colloquially in reference to individuals or communities attempting to improve their socioeconomic situations, but kept from doing so by others attempting to ride upon their coat-tails or those who simply resent their success.[4]
I don't see this at all Kev, all I saw ( in both scenarios ) was stupidity. The shooting into the house and the luring of the people with easy cash were not people tryin' to get out of anything, ahead of anybody or because of anybody else s success.