The Lens of Conscience: The Life and Legacy of Jacob August Riis In the flickering shadows of late nineteenth-century New York, where the gaslight struggled to pierce the gloom of overcrowded tenements, one man wielded a new kind of weapon: the camera flash. Jacob August Riis, a Danish immigrant whose early life was shaped by the hardships of Ribe, Denmark, did not merely observe the urban decay of the Progressive Era; he illuminated…