In recent weeks, just over one thousand people have been freed from several raids on abusive religious schools across northern Nigeria. The captives are mostly shackled males ranging from 7 to 40 years, who have been kept in inhumane and degrading circumstances. Nigeria’s president called for a crackdown of such establishments, where some of the captives were allegedly tortured and sexually abused. Reuters Bureau Chief for Nigeria, Alexis Akwagyiram joins CNBC Africa’s Esther Awoniyi for more….