Question: What classification of film is shared by 'An American Opera', which chronicles events following Hurricane Katrina and 'Fear of a Black Republican', which examines the lack of African Americans in the Republican Party? 
Sentence (from "Fear of a Black Republican"): The documentary film had its theatrical premiere in Washington, DC on March 22, 2012 and has screened around the United States at theatres, film festivals, colleges and universities and museums.
Relevant evidence: No