Afeni Shakur, Tupac Shakur's mother, died last night at age 69 from possible cardiac arrest.

Though she is primarily known as the subject of Tupac's 1995 song "Dear Mama" -- one of the best songs about mothers of all time -- she was a social activist for many years and, later in life, the manager of Tupac's estate. "Many mothers have their children," she said in a 2011 interview. "Not many mothers have their children physically and been able to have their children still before them in so many ways."

Click through the gallery to learn more about the life of Afeni Shakur.