Reviewed by GREG KING Director: Justin Chadwick Stars: Oliver Litondo, Naomie Harris, Alfred Munyua. Based on the true story of Kimani N’gan’ga Maruge, The First Grader tells the moving story of an 84 year-old Kenyan farmer and ex-Mau Mau freedom fighter who fights for his right to go to school. In 2003, the Kenyan government …