19th century: Why does documentary photography favor the lower class?

Arouse humanistic care, social conscience and social responsibility. Social documentary photography was born at the end of 19 in the United States in the first half of the 20th century. A new generation of documentary photographers consciously record a certain social state through cameras, and then play a role in influencing social development. Hein claimed that his achievement was the achievement of "social photography", and insisted that photography should be guided by social consciousness, which laid a theoretical foundation for the development of social documentary photography. He was the first photographer to put forward the view that the purpose of documentary is to combine the spirit and method of realism. In the past decade, a new generation of documentary photographers began to work in a more personal way. The main purpose is not to promote life change but to recognize life.