1. The Battle of Charleston occurred on June 4, 1780, during the American Revolutionary War. British forces attacked the city, resulting in a siege that lasted over a month and ended with the city's surrender to the British.

2. On June 4, 1896, the landmark case of Plessy v. Ferguson was decided by the United States Supreme Court. The decision upheld the "separate but equal" doctrine, which allowed for segregation of public facilities based on race.

3. In 1963, the South Carolina Legislature passed a resolution declaring June 4 as "Robert E. Lee Day" in honor of the Confederate general. The resolution was eventually repealed in 2017, with lawmakers citing the need to move away from celebrating symbols of the Confederacy.

4. On June 4, 1989, a violent confrontation between civilians and the Chinese government occurred in Beijing's Tiananmen Square, resulting in numerous deaths and injuries. A memorial to those who lost their lives was later created in Columbia, South Carolina.

5. The South Carolina Aquarium, located in Charleston, officially opened its doors to the public on June 4, 2000. The aquarium features over 5,000 animals and is a popular destination for both tourists and locals alike.