1. On August 4, 1914, Washington D.C. held a "preparedness parade" in response to the outbreak of World War I. The parade featured military units, patriotic floats, and speeches by prominent politicians.

2. In 1964, the Beatles played their first concert in the District of Columbia at the Washington Coliseum on August 4. The concert was attended by over 8,000 fans and was followed by a second performance the next day.

3. August 4, 1937, marked the opening of the Frederick Douglass Memorial Bridge, which spans the Anacostia River and connects Washington D.C. with southern Maryland. The bridge was named after the famous abolitionist and statesman who lived in the city during the late 19th century.

4. On August 4, 1994, the Clinton administration announced a major plan to combat crime and drug use in the District of Columbia. The plan involved increasing the number of police officers on the streets, implementing community policing programs, and increasing funding for social programs.

5. In 1921, the Washington Senators baseball team played a doubleheader against the Cleveland Indians on August 4. The Senators won both games, with a score of 8-2 in the first game and 1-0 in the second. The team went on to win the American League championship that year, but lost the World Series to the New York Giants.