Senegal school boys 'treated like slaves' by teachers

As many as 50,000 boys in the West African state of Senegal are living in slave-like conditions and being forced to beg, according to human rights workers.

Human Rights Watch says teachers at many of the country's private Islamic schools, or daraas, are using education as a cover for the exploitation of boys as young as three.

Angus Crawford reports from Dakar.