Find out what happened on November 7 in this video of This Day in History. On this day in 1874, the Republican Party was first depicted by their elephant symbol in a cartoon in an edition of Harper's Magazine. On November 7, 1917, the Bolsheviks, led by Vladimir Lenin, overthrow the government of Russia and seized power. David Dinkins was elected as the first African American Mayor of New York City on November 7, 1989. Lastly, on November 7, 1991, hall of famer Magic Johnson announced his early retirement from the NBA. During a routine physical Magic Johnson was diagnosed with having the HIV virus. Now this hall of famer educates young people around the nation on how to defend themselves against AIDS.