It’s actually worse than those numbers would make it appear.
The percentage of the black population committing those 50% of the murders is actually much smaller than 12%. They’re predominantly committed by young men. Eliminating women takes it down to about 6%. Eliminating the male children (real children, not gangbanger teens) and the elderly men brings the percentage of the population much closer to 4% or less.
Re your post 18, I did not see that before I posted something similar (post 38). But I see you did a better job of refining the analysis.