A quick glance at this will confirm for you that we are a fairly tribal species and we stick to our own racial lanes in many ways, including killing each other. It’s true that the vast majority of blacks who are murdered are killed by other blacks, but 2,245 out of 2,491 works out to 90%, not 97. But as for the white murder victims, whites account for 84%. (2,509 out of 3005)
I think the spot where we come into some confusion over this is the proportional numbers. As a parallel, you’ll often hear the Black Lives Matter crew claiming that the vast majority of people killed by police are black. In reality, the majority of suspects killed by the cops are white, but it’s a fairly slim majority. So since black citizens only account for 13.2% of Americans, they are proportionally being killed by cops at a higher rate. That’s where that disagreement comes from and the same applies here.
Of course, this numbers game plays both ways and that may be where the disconnect on the murder figures come in. It’s true that whites commit more murders in the United State (2,509 vs 2,245 for black offenders) but when you mix in the proportionality aspect of it the same bend in the curve applies. If all factors were completely race neutral, out of 3005 murders in 2013 you would expect to see 397 murders committed by black suspects rather than 2,245 so they’re punching way above their weight class in that regard.