What triggered Vester Flanagan, a disgruntled former employee, to gun down a reporter and cameraman this week in Virginia? Speaking on CBS This Morning, former FBI Deputy Director John Miller called Flanagan an "Injustice Collector."
Miller cited the 23-page manifesto faxed to ABC News after the shooting saying, "This final act of leaving behind this, this long treatise about what everybody did and listing every tiny slight, that is the classic injustice collector."
Miller defined "classic injustice collectors" as people who feel they aren't finding success and blame others whom they believe stood in their way. It happens when a person holds grudge after grudge, until it eventually leads to hopelessness and rage.
LSU-Shreveport Graduate Studies Dean Sanjay Menon describes Vester Flanagan as having a 'persecution complex.' "It's rarely that somebody suddenly snaps," said Menon. "It's more like building, building up, building up 'til you suddenly snap."