In the debate about blacks in sport, I was having this conversation with my friend the other day. He pointed something out that I hadnt personally thought about, but which is so blindingly obvious I couldnt believe I didnt think of it myself. Blacks in 1st world countries like UK or US are  selectively bred  . Their ancestors were brought over on the basis of physical strength, hardiness, speed etc. The best physical specimens were plucked because they were the ones most likely to survive a long sea journey and would be most useful at their final destination. When they arrived they interbred with other genetically selected blacks for generations to form a kind of superblack. The black athletes and in fact a large part of the black population we see in developed countries are disproportionately large and strong for this reason.   In contrast, look at the average african black...he is naturally smaller and weaker than the average white.  Now imagine doing the same thing for the WHITE race.....