Kenyan photographer Boniface Mwangi, who documents the violence in the country, has found a new target. He has focused his camera on graffiti artists who want their story heard.
Disillusioned with Kenyan government ministers and the nation's elite, graffiti artists are taking their frustration out to the streets and walls of Nairobi, painting images condemning the injustices towards the country's poor.
CNN's David McKenzie reports.
