White on white crime is a national epidemic. 90% of white people are victimized by white people. Every race is about the same.
All I have to do is look at the newspaper or tv or Twitter or history.
I think you're conflating two different observations. The majority of crimes are against those you are around most so of course you'll see overall numbers grouped accordingly.
What I think was being pointed out is the much higher rates between those groups. I just looked at a stat where the homicide rate for black males in 2016 was 38 per 100K vs 5 per 100K for white males. I'd consider that a significant difference.