I've been thinking about the US crime rate and what are the causes of the rapid increase of crime in the 60s-80s, and why its been down, despite recessions.
First off, its my belief that GINI, unemployment and other economic factors are the primary driver. Racial strife can also be a problem, as it can correlate with the other economic indicators (as minority races in most countries may be immigrants and lacking the required skills in a given country - e.g. hispanics in the US lacking advanced skillsets for high tech jobs, blacks prior to de-segregation, ect).
However, such metrics are not the only drivers of crime. I would believe there are a lot of other factors, which may be the underpinning reasons as to why our crime is still going down, despite the significant rise in unemployment.
I think the first and most important analysis is of the rapid rise in the 1960s, in which the rate per capita of crime nearly doubled - a horrific number.
Thinking hard about it, I don't think it was entirely racial, although that was probably a decent bit of it (e.g. integration of blacks into society may have caused problems due to the vast disparity in education with white society). I think a lot of it correlates to the baby boom of the post-war era. The crime started in the mid 60's. Who would commit the increased crimes? Obviously, it had to of been peoples over the age of 18, which would mean that your looking at the likelihood of criminals being born in and after WW2 - as an 18 year old man in 1965 (the start of the major increase in crime) was born in or around 1947. Crime continued to rise during the late 60s and 70s - which corresponds exactly with the boom of children in the late 40's and early 50s - those were the youths that likely fueled the crimes of the 60s, and 70s.
I'll add to this later, but that is IMO as a primer to my thoughts about American crime rises in the 60's and 70's.