Overnight, someone stopped by searching for “% engage in violence.”
That problem is what sort of violence the searcher had in mind. Is it the snippy answer to an innocent question? Some would call that violence and it a subject that should have more attention.
A couple of teenagers who are determining who takes the pretty girl to the prom? That is definitely violence, and sometimes criminal violence.
How many people in the general population who have made a career of criminal violence? That is also violence. Without a more specific search, it is hard to know what information is wanted.
Assuming the search is for what percentage of the general populaion are violent criminals, most city police departments have a list of those they consider primary suspects when a violent crime occurs.
Depending on the employment rate, the buying power of the local mean income, and local demographics, the incidence of serous violent offenders ranges from a low of around 8 per 100,000 population to as high as 70.
Obviously, only a very small percentage of offenders fall in the worst-of-the-worst violent offenders category. Departments that have the resources target that group, instead of revenue priducing traffic tickets, can generally keep the lid on violent offenses.