Harris, 54, was born in Oakland, California to a father from Jamaica and a mother from India. She spoke of her experience growing up black in the debate, recalling a story about neighbors who wouldn’t let their children play with Harris and her sister because of the color of their skin.

The attacks on Harris’s background started Thursday when Ali Alexander tweeted she is not an “American black.”

“She is half Indian and half Jamaican,” Alexander wrote. “I’m so sick of people robbing American Blacks (like myself) of our history. It’s disgusting. Now using it for debate time at #DemDebate2? These are my people not her people. Freaking disgusting.”