From the article: "At age 18, arrest rates were 12 percent for white females and 11.8 percent and 11.9 percent for Hispanic and black females, respectively. By age 23, arrest rates were 20 percent for white females and 18 percent and 16 percent for Hispanic and black females, respectively."
The parent comment is clearly referring to the HN headline, not the article itself. Since young men do not massively outnumber young women, it is not the case that 40% of all US youths have been arrested.
