1. In 1977, the Washington Post published an article revealing that the Committee for the Re-Election of the President, led by President Richard Nixon, had paid millions of dollars to people involved in the Watergate scandal. This revelation ultimately led to Nixon's resignation from the presidency.

2. On March 7, 1965, civil rights activists led a peaceful march from Selma to Montgomery, Alabama, to protest voter discrimination against African Americans. The march was met with violence by state troopers, but ultimately contributed to the passing of the Voting Rights Act later that year.

3. In 1793, President George Washington signed the first Fugitive Slave Act, which made it legal for slave owners to retrieve their runaway slaves from other states.

4. In 1953, the Supreme Court of the United States ruled in the landmark case of District of Columbia v. John R. Thompson Co., Inc. that racial segregation in public accommodations, such as restaurants and movie theaters, was unconstitutional.

5. On March 7, 2007, the District of Columbia Council approved the legalization of medical marijuana for patients suffering from chronic medical conditions. The District later legalized recreational use of marijuana in 2014.