Africa is not educated enough for self rule. The whole continent should be put under UN rule, the number one priority should be establishing universal primary education, then after 3 generations or so have been through that system, maybe they can try democracy again.
Horrible crimes happen all over the world. You might as well list all the most gruesome and sadistic murders committed in the US and claim Americans are not educated enough to rule themselves - and you would be equally wrong.
Or equally right. After all, Churchill did point out that it often has been said that
"democracy is the worst form of government".
