The man who shot nine people to death last weekend in Dayton, Ohio, seethed at female classmates and threatened them with violence.
The man who massacred 49 people in an Orlando nightclub in 2016 beat his wife while she was pregnant, she told authorities.
The man who killed 26 people in a church in Sutherland Springs, Tex., in 2017 had been convicted of domestic violence. His ex-wife said he once told her that he could bury her body where no one would ever find it.
The motivations of men who commit mass shootings are often muddled, complex or unknown. But one common thread that connects many of them — other than access to powerful firearms — is a history of hating women, assaulting wives, girlfriends and female family members, or sharing misogynistic views online, researchers say.
As the nation grapples with last weekend’s mass shootings and debates new red-flag laws and tighter background checks, some gun control advocates say the role of misogyny in these attacks should be considered in efforts to prevent them….
Not to belabor the obvious, but why must we continue to ignore the sadomasochistic imprinted violence and pleasure lobotomy perpetrated against infant boys solely by american medicine (no other medical establishment in the world does this) and its proven psychological and neurological connections to adult violence. Or is that so obvious as to be a national embarrassment? Can we finally be adults about this issue?
… The long term psychological impact of birth-related trauma is also relevant to the issue of MGM. Recent studies have found striking connections between birth trauma and adult post traumatic stress and suicide, [93, 94, 95, 96, 75, 67, 78, 97] and adult victims of infant MGM often exhibit a spectrum of symptoms including:
a sense of personal powerlessness
lack of trust in others and life
a sense of vulnerability to violent attack by others
irrational rage reactions
addictions and dependencies
difficulties in establishing intimate relationships
decreased ability to communicate
reluctance to be in relationships with women
anger and violence toward women  …
“Society reaps what it sows in the way it nurtures its children. Stress sculpts the brain to exhibit various antisocial, though adaptive, behaviors. Whether it comes in the form of physical, emotional or sexual trama or through exposure to warfare, famine or pestilence, stress can set off a ripple of hormonal changes that permanently wire a child’s brain to cope with a malevolent world. Through this chain of events, violence and abuse pass from generation to generation as well as from one society to the next. Our stark conclusion is that we see the need to do much more to ensure that child abuse does not happen in the first place, because once these key brain alterations occur, there may be no going back.”Martin Teicher, Scars That Won’t Heal: The Neurobiology of Child Abuse. Scientific American; March 2002 
“It is the neuronal systems of the brain which mediate pleasure that regulate and control depression, violence and drug/alcohol abuse and addiction. This control and regulation is provided through the mechanisms of reciprocal inhibition. When the neuronal pleasure circuits of the brain are damaged by SAD-DNS (Somatosensory Affectional Deprivation/Denervation Supersensitivity) then they cannot perform their normative role of regulation and inhibition of those neuronal circuits that mediate depression and violent behaviors.”Dr. James W. Prescott, presentation to NIH panel on Anti-Social, Aggressive and Violence-Related Behaviors and Their Consequences. Center for Science Policy Studies, National Institutes of Health, Bethesda, MD, 9/93 
“[…] These findings overwhelmingly support the thesis that deprivation of body pleasure throughout life — but particularly during the formative periods of infancy, childhood, and adolescence — are very closely related to the amount of warfare and interpersonal violence [in a given society].”