"The bitter cry of the children" is a socio-political treatise by the American writer John Spargo, which was published in 1906. The author describes the appalling conditions under which child laborers work in the factories and mines of the United States. The book encourages social activism and raising awareness about the problems of child labor. John Spargo uses his talent as a writer to evoke emotions in the reader and push him to think about the need for reforms in society. "The Bitter Cry of Children" still remains an important business document about the problem of child labor and social justice.