While you are right that it has nothing to do with race, as in most non white collar crime, blacks are statistically disproportionately represented.
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Of the 702,000 cases of substantiated child abuse in 2009, the latest year for which federal data are available, 44 percent involved white children and 22.3 percent involved black children. Blacks make up 12.4 percent of the country's population; whites, 74.8 percent. Latinos -- who, researchers noted, are disproportionately poor -- are 15.8 percent of the nation's population, but they made up 20.7 percent of the total population of abused children. The rate of abuse among Latinos children was proportionately higher than that of whites but lower than that of blacks. Researchers attribute that difference to the "Hispanic paradox," or what are believed to be that community's comparatively stricter cultural mores against child abuse.