1. On June 20, 1863, the Battle of Barber's Creek took place near Charleston, South Carolina during the American Civil War. Confederate troops under General P. G. T. Beauregard took on Union forces under Colonel Robert G. Shaw. The Union was ultimately defeated and Shaw was killed.

2. June 20, 1943, marked the opening of the South Carolina State Fairgrounds in Columbia. The fairgrounds, which still host the South Carolina State Fair every October, cover over 120 acres and feature a variety of exhibits, rides, games, and food vendors.

3. On June 20, 1964, three civil rights workers - Andrew Goodman, James Chaney, and Michael Schwerner - were murdered in Neshoba County, Mississippi. Goodman was a student at Queens College in New York City and had spent the previous summer registering black voters in South Carolina.

4. In 1990, the U.S. Supreme Court ruled in the case of South Carolina v. Baker that South Carolina's system of electing judges was unconstitutional because it violated the one person, one vote principle. The ruling led to the implementation of district-based judicial elections in the state.

5. On June 20, 2015, South Carolina Governor Nikki Haley signed legislation to remove the Confederate battle flag from the state Capitol grounds. The flag had flown there for over 50 years and had become a symbol of controversy and racial tension following the 2015 Charleston church shooting. The removal of the flag was seen as a significant moment in the ongoing struggle for civil rights and racial equality in South Carolina.