Sola Sierra, Chilean human rights activist (died 1999)

Sola Sierra Henríquez was a Chilean human rights activist. She was director of Relatives of the Detained-Disappeared organization, and campaigned to find out the truth about the people who were violently disappeared during Augusto Pinochet's dictatorship.

December 1 is the 335th day of the year in the Gregorian calendar; 30 days remain until the end of the year.