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Walk down the street.  You will notice that black Americans generally have smaller heads, reflecting smaller brains..

On 17/02/2018 00:58, g2s wrote:

You'd have to be a moron ... ie. Pinhead, to actually believe that.

You think that only morons believe their eyes. Blacks need more supervision than other races, are less inclined to accept it, hence tended to be enslaved at a higher rate than other races. As a result black Africa always had more slaves than they could handle, and tended to eat the surplus.