into play: the one race gap that has actually been narrowing is the fertility gap...
http://www.unomaha.edu/news/2015/01/fertility.php
...as for culture, you probably don't really want to go there. There is a reason the third world wants to immigrate here and Europe and it's not the culture you find in inner city USA or in the cultures the migrants are leaving behind.
Edited by MUTGR at 21:16:45 on 11/24/16