Jacob Riis was a Danish‑American journalist, photographer, and social reformer who became famous in the late 1800s for exposing the harsh living conditions of poor immigrants in New York City’s slums.

Who was Jacob Riis?

  • Full name: Jacob August Riis, born in Ribe, Denmark, in 1849, and died in Massachusetts in 1914.
  • He immigrated to the United States around age twenty, doing odd jobs before becoming a newspaper police reporter in New York City.
  • Working the night shift in some of the city’s worst tenements gave him an intimate view of poverty, crime, and overcrowding among immigrant communities on the Lower East Side.

What did he do?

  • Riis used a then‑new technique, flash photography, to take stark nighttime photos of cramped rooms, dark alleys, and homeless children, making invisible misery suddenly visible to the public.
  • His most famous book, “How the Other Half Lives” (1890), combined shocking photos and reporting to show middle‑ and upper‑class readers how people in New York’s slums actually lived.
  • The book helped spur early housing reforms, including efforts to improve tenement laws and promote “model tenements” with better light, air, and sanitation.

Why is he important today?

  • Riis is often called a pioneer of photojournalism because he blended photographs and storytelling to push for concrete social change.
  • His work is seen as a forerunner of later “muckraking” journalism that investigated and exposed problems like corruption, child labor, and unsafe working conditions.
  • Modern journalists, historians, and activists still study his images and books as early examples of using media to pressure governments and the public to address urban poverty and inequality.

Mini FAQ: “who was jacob riis” (for quick reference)

  • He was: A reporter, photographer, and social reformer focused on New York City’s poor.
  • Famous for: “How the Other Half Lives” and powerful photos of tenement life.
  • Legacy: Helped inspire housing reforms and the rise of investigative social journalism.

Information gathered from public forums or data available on the internet and portrayed here.