BLUF:
I’ve met too many like Howard, (Howard’s eyes scare me. They’re pitch-black and utterly lifeless. When one looks into them, one strives to detect a spark of life, of humanity, of the person inside the body… but it’s not there)
and I take their threat very seriously. It’s one reason I carry a gun, because I know they’re out there. For every one behind bars, I’d guesstimate there are at least two or three on the street.
“The 1 % of the population accountable for 63 % of all violent crime convictions”
That’s the title of an article about Swedish research into violent crime in that country. In the light of our discussion yesterday about violent crime in Washington D.C. and other US cities, I found its conclusions very interesting. Here’s the abstract (i.e. executive summary) from the article. Bold, underlined text is my emphasis.
Purpose
Population-based studies on violent crime and background factors may provide an understanding of the relationships between susceptibility factors and crime. We aimed to determine the distribution of violent crime convictions in the Swedish population 1973–2004 and to identify criminal, academic, parental, and psychiatric risk factors for persistence in violent crime.
Method
The nationwide multi-generation register was used with many other linked nationwide registers to select participants. All individuals born in 1958–1980 (2,393,765 individuals) were included. Persistent violent offenders (those with a lifetime history of three or more violent crime convictions) were compared with individuals having one or two such convictions, and to matched non-offenders. Independent variables were gender, age of first conviction for a violent crime, nonviolent crime convictions, and diagnoses for major mental disorders, personality disorders, and substance use disorders.
Results
A total of 93,642 individuals (3.9 %) had at least one violent conviction. The distribution of convictions was highly skewed; 24,342 persistent violent offenders (1.0 % of the total population) accounted for 63.2 % of all convictions. Persistence in violence was associated with male sex, personality disorder, violent crime conviction before age 19, drug-related offenses, nonviolent criminality, substance use disorder, and major mental disorder.
Conclusions
The majority of violent crimes are perpetrated by a small number of persistent violent offenders, typically males, characterized by early onset of violent criminality, substance abuse, personality disorders, and nonviolent criminality.
There’s much more at the link. Highly recommended reading for those in the field of crime prevention, investigation and prosecution.

