Jacob Riis was a pioneering social reformer, journalist, and photographer whose groundbreaking work illuminated the harsh realities of urban poverty in 19th-century New York City. After enduring poverty and hardship as a Danish immigrant, Riis used his firsthand experiences to advocate for the city’s most vulnerable residents. He introduced the use of flash photography to document life inside the city’s dimly lit tenements, culminating in his landmark 1890 publication, How the Other Half Lives. This powerful blend of images and investigative writing galvanized public awareness, influenced policy reform, and set a new standard for photojournalism.
Discover how Riis’s enduring legacy continues to shape conversations around poverty, housing, and social justice today.
Key Takeaways
- Jacob Riis pioneered social reform through photojournalism, using flash photography to expose the harsh realities of New York City’s tenement life.
- His 1890 book How the Other Half Lives combined powerful images and narrative, raising public awareness and prompting housing reform.
- Riis’s collaboration with Theodore Roosevelt helped close dangerous lodging houses and contributed to the Tenement House Act of 1901.
- His work transformed photography into a tool for advocacy, setting a precedent for using visual evidence to drive social change.
- Though influential, Riis faced criticism for occasionally reinforcing ethnic stereotypes in his portrayals of immigrant communities.
Early Life and Influences
Jacob Riis was born on May 3, 1849, in Ribe, Denmark, as the third of 15 children. His father, a schoolteacher and writer, instilled in him a deep appreciation for literature, moral values, and compassion for the poor—principles that would later define his life’s work.
After immigrating to the United States in 1870, Riis experienced extreme poverty firsthand. Struggling to find stable work and housing, he lived among New York City’s tenement dwellers, facing the same overcrowded and unsanitary conditions that afflicted thousands of immigrants.
These early hardships had a profound effect on Riis, shaping his worldview and strengthening his empathy for the marginalized. His personal encounters with suffering became the driving force behind his commitment to social reform, leading him to expose the realities of urban poverty and advocate for change through journalism and photography.
Journey to America and Initial Struggles
Jacob Riis arrived in the United States in 1870 at the age of 21, carrying little more than $40 and a treasured locket. Like many immigrants of the time, he was drawn by the promise of opportunity but quickly encountered the harsh realities of urban life in New York City.
He initially sought work as a carpenter, but stable employment was difficult to find. Riis soon fell into poverty, enduring periods of homelessness during which he slept in doorways and public parks, sometimes relying on discarded food to survive.
During this time, Riis also attempted to join the military to fight in the Franco-Prussian War, but his efforts were unsuccessful. At one of his lowest points, after being expelled from a lodging house, he received temporary support from the Danish Consul in Philadelphia, which helped him recover his footing.
These firsthand experiences with destitution and displacement left a lasting impression on Riis. They not only deepened his empathy for the poor but also laid the emotional and moral foundation for his future work as a journalist and advocate for urban reform.
Breakthrough in Journalism

Jacob Riis revolutionized American journalism by harnessing the power of photography to expose the harsh realities of urban poverty. He was among the first to use flash photography—a groundbreaking technique at the time—to capture life inside the dark, overcrowded tenements of New York City.
His most influential work, How the Other Half Lives (1890), combined vivid narrative journalism with stark photographic evidence, offering the public a raw and unprecedented glimpse into the living conditions of the urban poor. The book shocked middle- and upper-class readers and marked a turning point in how social issues were reported and understood.
Riis’s photographs and reporting, published in outlets such as The Sun and Scribner’s Magazine, played a crucial role in shaping public discourse and influencing housing reform. His work contributed directly to legislative efforts like the Tenement House Act of 1901, helping to improve standards for sanitation, light, and ventilation in urban housing.
Innovations in Photography
Facing the challenges of photographing in dark, overcrowded tenements, Riis adopted then-cutting-edge techniques such as magnesium flash powder, which allowed him to capture images in low-light and nighttime conditions—a feat previously considered impossible.
These stark, unfiltered images were crucial in visually exposing the squalid environments endured by New York’s poor. Although his methods initially drew skepticism, Riis’s commitment to documenting reality prevailed, producing some of the earliest examples of flash-assisted photojournalism.
His groundbreaking 1890 publication, How the Other Half Lives, included 18 powerful photographs paired with compelling narratives. This fusion of visual and written storytelling not only shocked the public but also redefined journalism’s potential as an instrument for social change.
Impact of “How the Other Half Lives”

Published in 1890, Jacob Riis’s How the Other Half Lives became a landmark work in American social reform. By pairing unflinching photographs with powerful written accounts, Riis created a compelling portrait of life in New York City’s tenements—one that resonated deeply with readers and policymakers alike. The book’s influence was both immediate and enduring.
- Raised Awareness: Through a groundbreaking fusion of images and narrative, Riis brought public attention to the overcrowded, unsanitary conditions endured by impoverished immigrant families.
- Sparked Urban Reform: The outcry generated by the book helped lay the groundwork for the Tenement House Act of 1901, which introduced critical improvements in building safety, ventilation, and sanitation.
- Influenced Social Reform Movements: Riis’s work stirred empathy among middle- and upper-class readers, encouraging civic responsibility and philanthropic engagement.
- Pioneered Photojournalism: Riis set a precedent for using photography as a means of investigative journalism, showing that visual evidence could drive public awareness and policy change.
How the Other Half Lives remains a powerful example of journalism’s capacity to illuminate injustice and catalyze meaningful social progress.
Relationship With Theodore Roosevelt
The influence of How the Other Half Lives extended well beyond the public—it also reached Theodore Roosevelt, who would become one of Jacob Riis’s most influential allies. The two met in 1895, when Roosevelt was serving as New York City Police Commissioner. Deeply moved by Riis’s work, Roosevelt sought him out personally, and their meeting marked the beginning of a powerful partnership rooted in shared reformist ideals.
As commissioner, Roosevelt actively supported Riis’s efforts to improve urban conditions, including the closure of dangerous lodging houses and the enforcement of sanitation and housing laws. Their collaboration helped push forward reforms that addressed the most pressing issues in New York’s tenements.
Although the Tenement House Act of 1901 was passed after Roosevelt left New York politics, the groundwork laid by his alliance with Riis played a key role in making such legislation possible. Together, they exemplified the spirit of the Progressive Era, using journalism, civic engagement, and political action to confront social injustice and advocate for improved living conditions for the urban poor.
Legacy and Criticism
Jacob Riis’s legacy as a social reformer and photojournalist is both enduring and impactful, largely shaped by the success of his seminal work, How the Other Half Lives. His pioneering use of photography and narrative journalism exposed the grim realities of life in New York City’s tenements, catalyzing a wave of urban reform that culminated in the Tenement House Act of 1901.
Through his relentless advocacy, Riis helped bring about improvements in housing standards, sanitation, and public health, and inspired future generations of reformers and journalists alike. His work was instrumental in raising public consciousness and pushing poverty onto the national agenda.
However, Riis’s legacy is not without criticism. Some scholars and readers have noted the sensationalist tone in his writing and the stereotypical depictions of certain immigrant groups, particularly Eastern Europeans and Southern Italians. While his intentions were rooted in reform, his framing occasionally reinforced the very biases he aimed to dismantle.
Key aspects of Riis’s influence include:
- Legislative Change – Helped initiate housing reforms such as the Tenement House Law.
- Public Awareness – Elevated national attention on urban poverty and immigrant struggles.
- Partnership with Theodore Roosevelt – Supported civic improvements and park development.
- Innovative Journalism – Blended photography with reporting, laying the foundation for modern photojournalism.
Despite the complexities of his legacy, Jacob Riis remains a pivotal figure in the history of American reform—a man whose lens illuminated the shadows of the city and whose voice gave power to the voiceless.