1. 1929 Stock Market Crash - On June 4, 1929, the iconic Hollywood Roosevelt Hotel opened its doors for the first time. However, just a few months later on October 29, the stock market crashed, sending shockwaves through the U.S. economy.

2. Robert Kennedy Assassination - On June 4, 1968, presidential candidate Robert F. Kennedy was shot at the Ambassador Hotel in Los Angeles, California. He died the following day, shocking the nation and changing the landscape of American politics forever.

3. First Gay Pride Parade - On June 4, 1970, the first-ever Gay Pride Parade was held in Los Angeles, California. The parade was a response to the Stonewall riots in New York City the year before, and is now celebrated around the world.

4. Women's Voting Rights - On June 4, 1919, the Nineteenth Amendment was passed by Congress, guaranteeing all American women the right to vote. California was one of the first states to ratify the amendment in 1919, helping to ensure its passage.

5. California Statehood - On June 4, 1850, California was admitted to the Union as the 31st state. The Golden State has since become one of the most populous and economically important states in the country, known for its diverse population and innovation-driven economy.