The New York Times began publication of the Pentagon Papers, a collection of top secret documents exposing U.S. strategy in the Vietnam War, which were leaked to to the New York Times and the Washington Post and 17 other newspapers by Daniel Ellsberg, a former Defense Department analyst.
The papers revealed that the U.S. government had misled the public about the Vietnam War, including the extent of its involvement and the likelihood of military success. The New York Times published a series of articles based on the papers, leading to a legal battle with the Nixon administration and ultimately contributing to a broader public discourse on the war. More
Daniel Ellsberg at 1972 press conference - Public domain Image - Via Wikimedia