Item. Harris L Coulter, PhD - arguably the US's foremost medical historian - in his 1990-published book 'Vaccination, Social Violence and Criminality: The Medical Assault On the American Brain', detailed the case for a whole upsurge of conditions of what were then generically labeled Minimal Brain Damage/Disorder (MBD) being caused by vaccines, and the mass vaccination programs started in the late 40s-50s. Among the symptoms of these conditions were: cruelty to animals; excessive bedwetting; and fire-starting.
Item. The FBI man behind the developing of what has become known as profiling, in interviewing serial killers in prison, was struck by some common themes in their childhoods - so common that he coined an expression: the 'homicidal triad'. These three common traits were...cruelty to animals; excessive bedwetting; and fire-starting.
Item. In their book 'A Mind to Crime' - first published in 1995 - Anne Moir, PhD and David Jessel summarized the research to that date which revealed how "child abusers, domestic murderers, psychopaths, rapists, burglars - all have different kinds of chemical imbalances and brain malfunctions".
'Brain dysfunction' = MBD.
Are vaccines alone responsible for this upsurge in brain dysfunction and consequent massive antisocial behavior in our day and age? No. We're talking about what Dr Coulter calls subclinical encephalitis (also 'post-vaccinal encephalitis'); and encephalitis - BRAIN DAMAGE (literally, inflammation of the brain) - can be caused by other factors. (Indeed, it was the similarity between cases & their symptoms of encephalitis in the 30s, and what started to become a veritable epidemic of similar symptoms in the wake of the mass vaccination programs, that first drew Dr Coulter's attention to this phenomenon, and link.) But vaccines (especially certain ones; and especially the pertussis component of the DPT vaccine) ARE A FACTOR.
And it is long past time that this was recognized, and dealt with, in some responsible way.
P.S. The research summary by Moir & Jessel shows that particular brain disorder patterns (a) can be identified by PET scanning, and (b) are more likely than others to result in the person engaging in antisocial behavior. Thus, those persons can be identified earlier in life, and helped through their potential difficulties. Theirs. And ours.