* Jacob Riis: A Danish-American journalist and social reformer, Riis is known for his groundbreaking photography of the slums of New York City in the late 19th century. His book "How the Other Half Lives" (1890) exposed the harsh realities of poverty and overcrowding in the city's tenements.
* Honoré Daumier: A French artist and caricaturist, Daumier's lithographs often depicted the struggles of the working class in Paris, including the poverty and squalor of the city's slums. His works were often critical of the social injustices of his time.
* Käthe Kollwitz: A German printmaker and sculptor, Kollwitz's work explored themes of poverty, war, and social injustice. Her powerful and expressive imagery often depicted the hardships faced by the working class and the victims of social inequality.
* George Bellows: An American painter, Bellows's works captured the gritty realism of urban life in early 20th century New York City. His paintings often depicted scenes from the city's streets, including the slums and the struggles of its inhabitants.
* Diego Rivera: A Mexican muralist, Rivera's works often depicted the lives of the working class and the struggles of the poor. His murals often featured scenes from urban slums and factories, highlighting the social inequalities of his time.
These are just a few examples of artists who portrayed urban slums in their artwork. Many others have also explored this theme, using different media and styles to capture the realities of poverty and urban deprivation.