The problem was mixing FBI data and DoJ annual surveys of thousands of crime victims.
I saw this from Patrick J. Buchanan writings:
Suicide of a Superpower, this writer concluded: An analysis of single offender victimization figures from the FBI for 2007 finds blacks committed 433,934 crimes against whites, eight times the 55,685 whites committed against blacks. Interracial rape is almost exclusively black on white with 14,000 assaults on white women by African Americans in 2007. Not one case of a white sexual assault on a black female was found in the FBI study.
Others reported the same numbers.
But I could not find FBI stats for 2007 that cover black-on-white and white-on-black violent crimes.
I have posted DoJ surveys of victims of crimes including for the year 2007. Turns out that appears to be the source. But these are DoJ stats obtained from interviews with tens of thousands of victims of crime.
Crimes of violence against whites 3,262,660 and 13.3 % were black offenders; that's 433,934 times
Crimes of violence against blacks 562,470 and 9.9% were white offenders; that's 55,685 times
Crimes of violence against whites by blacks is 7.79 times the number of crimes of violence against blacks by whites.
I read one comment criticizing the stats saying, (paraphrasing) "Well, yeah. There's more whites around. So?"