1. On May 28, 1934, the infamous outlaw duo Bonnie and Clyde were shot and killed by law enforcement officers in Bienville Parish, Louisiana. Though the event did not occur in South Dakota, the notorious criminals' legacy still draws intrigue and interest from many in the state.

2. South Dakota became the 40th state of the United States on November 2, 1889. However, on May 28, 1888, Congress passed the legislation that would eventually lead to the state's creation, paving the way for South Dakota's eventual statehood.

3. In 1935, the South Dakota State Capitol building was completed after years of construction. The impressive Neo-Classical style structure, which includes a 165-foot central dome, is a prominent feature of the Pierre skyline and has served as the center of state government for nearly a century.

4. May 28, 1913, marked the opening of Mount Rushmore National Memorial's sculpting studio. The studio was used by artist Gutzon Borglum and his team to create the iconic faces of George Washington, Thomas Jefferson, Theodore Roosevelt, and Abraham Lincoln that now adorn the mountain in the Black Hills.

5. On May 28, 1866, the United States Army established Fort Sully near present-day Pierre. The fort served as an important military outpost in the region, playing a role in the ongoing conflict between Native American tribes and settlers moving westward. Today, the remains of the fort can still be seen at a historic site just outside of Pierre.