Dorothea Lange "Migrant Mother" 1936. The woman in the photo is Florence Owens Thompson.
In 1960, Lange spoke about her experience taking the photograph:
I saw and approached the hungry and desperate mother, as if drawn by a magnet. I do not remember how I explained my presence or my camera to her, but I do remember she asked me no questions. I made five exposures, working closer and closer from the same direction. I did not ask her name or her history. She told me her age, that she was thirty-two. She said that they had been living on frozen vegetables from the surrounding fields, and birds that the children killed. She had just sold the tires from her car to buy food. There she sat in that lean-to tent with her children huddled around her, and seemed to know that my pictures might help her, and so she helped me. There was a sort of equality about it.
Billboards on Highway 99, 1937
Children at the Weill public school in San Francisco pledge allegiance to the American flag in April 1942, prior to the internment of Japanese Americans.
A Japanese American unfurled this banner the day after the Pearl Harbor attack; Lange photographed it in March 1942, just prior to the man's internment.