January 14:
A.D. 1514: A papal bull against slavery is issued by Pope Leo X.
A.D. 1690: The clarinet is invented in Germany.
Important because I play it.
A.D. 1794 AD: The first successful Cesarean section is performed in Virginia by Dr. Jessee [sic] Bennet on his wife.
Important because that's how I was born.
A.D. 1878: Racial separation on trains is deemed unconstitutional in the U.S.
That's two important anti-racist actions on the same day.