1909    Mayor of Tokyo Yukio Ozaki presents Washington, D.C. with 2,000 cherry trees, which President Taft decides to plant near the Potomac River.

1933    In Miami, Florida, Giuseppe Zangara attempts to assassinate President-elect Franklin D. Roosevelt, but instead shoots Chicago, Illinois Mayor Anton J. Cermak, who dies of his wounds on March 6, 1933.

1933    Fiorello H. La Guardia is elected the 99th mayor of New York City.

1970    The first Earth Day proclamation is issued by San Francisco Mayor Joseph Alioto.

1983    Harold Washington is elected as the first African-American mayor in Chicago's history.

1998    The UN's International Criminal Tribunal for Rwanda finds Jean Paul Akayesu, the former mayor of a small town in Rwanda, guilty of nine counts of genocide.