Watergate Scandal

The Watergate scandal was a political scandal during the 1970s in the United States resulting from the break-in of theDemocratic National Committee headquarters at the Watergate office complex in Washington, D.C., and the Nixon administration's attempted cover-up of its involvement. Effects of the scandal eventually led to the resignation of Richard Nixon, the President of the United States, on August 9, 1974; the only resignation of a U.S. President. The scandal also resulted in the indictment, trial, conviction and incarceration of 43 people including dozens of top Nixon administration officials.
                     
http://en.wikipedia.org/wiki/Watergate_scandal