At last an article on the Osu - the outcasts or untouchables of Igboland. It is odd that this enduring caste system does not seem to have been challenged. You hardly ever read about it in the local papers. Perhaps there are human rights groups in eastern Nigeria who are tackling it, but who never get any airplay. Or perhaps life just carries on, while a whole section of society gets treated like shit. The linked article does not shed any light beyond make condemnatory noises. What's required first of all is serious sociological research. Where are there Osu communities? How long have they been there? What dynamics are in play which support/reinforce the stereotyping? There's a PhD thesis waiting to be written, as well as what probably would still be years of struggle ahead to abolish this indefensible division between communities.