Presidential candidate Kamala Harris dominated her Democratic rivals in a debate on Thursday, confronting front-runner Joe Biden on race and calling his remarks about working with segregationist senators "hurtful."

In a breakout performance, the daughter of a black Jamaican father and an Indian mother was at the center of several heated exchanges during the second night of debates among Democrats vying for the right to challenge the Republican candidate in the 2020 election.

Harris said the issue of race was deeply personal for her. She noted she was bused to school as part of integration efforts in California, and she questioned Biden's 1970s opposition to school busing.