On this day, Aug. 28 ...

1963: Dr. Martin Luther King, Jr. delivers his famous "I Have a Dream" speech at the Lincoln Memorial in Washington, D.C.

Also on this day:

  • 1922: The first commercial broadcast over radio airs on station WEAF in New York City. 
FILE - This undated file photo shows Emmett Till, a black 14-year-old Chicago boy, who was brutally murdered near Money, Mississippi, Aug. 31, 1955, after whistling at a white woman. Epic Records is going to

This undated file photo shows Emmett Till, a black 14-year-old Chicago boy, who was brutally murdered near Money, Miss., Aug. 31, 1955, after whistling at a white woman. (AP Photo/File) (The Associated Press)

  • 1955: Emmett Till, a black 14-year-old boy from Chicago, is abducted from his uncle’s home and later killed for allegedly whistling at a white woman. 
  • 1968: Police and anti-war demonstrators clash in the streets of Chicago as the Democratic National Convention nominates Hubert H. Humphrey for president
  • 1981: The Centers for Disease Control announces a medical task force has been formed to look into the incidence of Kaposi's sarcoma and pneumocystis in homosexual men; AIDS is later found to be the cause.
  • 1987: A fire damages the Arcadia, Fla., home of Ricky, Robert and Randy Ray, three hemophiliac brothers infected with AIDS whose court-ordered school attendance had sparked a local uproar.
  • 1987: Academy Award-winning movie director John Huston dies at age 81
  • 1996: Democrats nominate President Bill Clinton for a second term at their national convention in Chicago.
  • 1996: The 15-year marriage of Britain’s Prince Charles and Princess Diana officially ends with the issuing of a divorce decree.
  • 2005: New Orleans Mayor Ray Nagin orders everyone in the city to evacuate after Hurricane Katrina grows to a monster storm.
  • 2008: Illinois Sen. Barack Obama accepts the Democratic nomination for president. 
  • 2013: A military jury sentences Maj. Nidal Hasan to death for the 2009 shooting rampage at Fort Hood that claimed 13 lives.
  • 2014: Comedian Joan Rivers is rushed to New York’s Mount Sinai Hospital after she suffers cardiac arrest at a doctor’s office where she’d gone for a routine outpatient procedure (Rivers would a week later at age 81).
  • 2014: Acknowledging he “didn’t get it right” with a two-game suspension for Ravens running back Ray Rice, NFL Commissioner Roger Goodell announces tougher penalties for players accused of domestic violence, including six weeks for a first offense and at least a year for a second.