Top of the Heap (film)

Top of the Heap is a 1972 American drama film directed by and starring Christopher St. John. It was entered into the 22nd Berlin International Film Festival.
Plot.
A Washington D.C. police officer, George Lattimer (St. John) is proud to be one of few African-Americans in the department. However, his peers, or people do not show love for him. When he is passed up for the promotion of sergeant, trouble erupts.