1. On January 14, 1865, the 13th Amendment to the US Constitution was ratified, officially ending slavery in the United States. This historic moment was a major milestone in the fight for civil rights and equality.

2. In 1958, Washington D.C. became the first city in the United States to adopt a law banning racial discrimination in restaurants. The DC Human Rights Act not only outlawed segregation in eating establishments, but also in hotels, stores, and other public places.

3. On January 14, 1964, civil rights leader Martin Luther King Jr. delivered a speech at a rally in Washington D.C. in support of the Civil Rights Act, which would later become law. In his speech, King called for an end to racial discrimination and segregation, and urged the government to take action to ensure equal rights for all Americans.

4. In 2009, Barack Obama was inaugurated as the 44th President of the United States in Washington D.C. on January 14. Obama's historic election marked a major milestone in American history, as he became the first African American to hold the office of President.

5. Finally, January 14 is celebrated as National Dress Up Your Pet Day, a fun holiday that encourages pet owners to get creative with their furry friends' outfits. From cute costumes to fancy accessories, people across the country celebrate their pets in style on this day.