Almost a third...

...of Americans under the age of 23 have been arrested for a crime. From an article in today's Times (my emphasis):

The study, the first since the 1960s to look at the arrest histories of a national sample of adolescents and young adults over time, found that 30.2 percent of the 23-year-olds who participated reported having been arrested for an offense other than a minor traffic violation.

That figure is significantly higher than the 22 percent found in a 1965 study that examined the same issue using different methods. The increase may be a reflection of the justice system becoming more punitive and more aggressive in its reach during the last half-century, the researchers said. Arrests for drug-related offenses, for example, have become far more common, as have zero-tolerance policies in schools.