WRONG : For "Violent Crime", defined as these five specific crimes : (Armed Robbery, Murder and nonnegligent manslaughter, Aggravated assault, Other assaults, and Violent crime)... the FBI databases show nationwide Blacks arrested do 52% of violent crimes. The most common arrest for violent crime is "Robbery", and for all ages as shown above, 54.5% by Blacks. You don't just add the percentages together and divide! Each crime category has a far different incident rate. FBI databases show nationwide Blacks arrested do 52% of violent crimes.