What is the relationship between documentary photography and new realism? Wait online ~ urgent!

Are all a kind of documentary photography. Documentary photography is a kind of photography whose main appeal is to record the reality of life. The material comes from life and reality, and truthfully reflects what people see. Therefore, documentary photography has the value of recording and preserving history and has the unique qualification as a social witness. Documentary photography is an explanatory photo to explain the relationship between people and the environment and between people and social activities.