From Caliph Umar and the spread islam by the sword across the Middle east and north africa , to Tamerlane, Genghis Khan and his descendants and so many more- I would feel insulted at your whitewash of history. Fancy killing thousands and even millions and being ignored because you don't happen to be white. There are plenty of savage and sadistic conquerors who don't happen to be white. There is no glass ceiling, anyone can do it if they put their mind to it. Even you.