According to Ron Unz*, on an age-adjusted per capita basis, Hispanics only commit a slightly higher number of crimes than non-Hispanic whites. The median age Hispanic is around 27, whereas the median age non-Hispanic white is over 40. Blacks, however, are off the charts.
* Unz pushed through a referendum initiative to end bilingual education in California. This put an end to the teaching of non-language-related subjects in anything other than English.