1. Kansas Day: In 1861, May 14th was the day Kansas became a state in the Union. This day is celebrated annually as Kansas Day.

2. John Brown's Death: On May 14, 1856, abolitionist John Brown led a terrorist attack against pro-slavery settlers in Lawrence, Kansas. This was a part of an ongoing violence between pro-slavery and anti-slavery settlers in Kansas. Brown was later caught and hanged for his crimes.

3. Tornado Outbreak: May 14, 2003, was marked by a severe tornado outbreak that caused widespread damage and destruction across the state. Over 60 tornadoes were reported, and several towns were completely destroyed. The tornado outbreak caused 20 deaths and hundreds of injuries.

4. Brown v. Board of Education: On May 14, 1954, the US Supreme Court handed down the landmark decision of Brown v. Board of Education. The ruling declared that segregation in public schools was unconstitutional, overturning the precedent of "separate but equal." This was a significant moment in the civil rights movement and played a crucial role in ending racial segregation in public schools.

5. First Female Mayor: On May 14, 1887, Susan Madora Salter became the first female mayor in the United States. She was elected in Argonia, Kansas, and served for one year. Her election was a significant milestone for women's suffrage and paved the way for women to hold public office in the US.