1. On June 2, 1924, the Osage Indian murders trial began in Oklahoma. The trial was one of the most infamous and important legal cases in Oklahoma and American history, as it involved the death of many members of the Osage tribe due to the greed of white settlers over oil rights.

2. The National Cowboy Hall of Fame and Western Heritage Center (now the National Cowboy and Western Heritage Museum) opened in Oklahoma City on June 2, 1965. The museum is dedicated to preserving and celebrating the history, heritage, and culture of the American West.

3. In 1994, Oklahoma experienced one of its most deadly tornado outbreaks on record, with over 25 tornadoes touching down throughout the state on June 2. The storms claimed at least 3 lives and caused widespread damage.

4. On June 2, 1919, one of the worst race riots in American history began in Tulsa, Oklahoma. The Tulsa Race Massacre, as it is now known, resulted in the deaths of as many as 300 black residents of Tulsa and the destruction of the city's prosperous Greenwood District, known as "Black Wall Street."

5. June 2 is also known as Oklahoma Day in the state. The day was first recognized by the Oklahoma Legislature in 2002 as a way to celebrate the state's rich history and culture. Activities and events are held throughout the state on this day to commemorate Oklahoma's heritage.