Source: “Protest against child labor in a labor parade,” May 1, 1909. George Grantham Bain Collection, Library of Congress, https://www.loc.gov/pictures/collection/ggbain/item/97519062/. Post-processed in Photoshop. The full texts of the signs would read “Nieder mit Kinder Shklaferey” and “Abolish child slavery!!”