She visited India as a child and was heavily influenced by her grandfather, a high-ranking government official who fought for Indian independence, and grandmother, an activist who traveled the countryside teaching impoverished women about birth control. Harris attended middle school and high school in Montreal after her mom got a teaching job at McGill University and a position as a cancer researcher at Jewish General Hospital. In Montreal, a 13-year-old Harris and her younger sister, Maya, led a successful demonstration in front of their apartment building in protest of a policy that banned children from playing on the lawn.