Jill Biden says American people know Joe Biden isn't racist

Democratic presidential candidates from left, South Bend Mayor Pete Buttigieg, former vice president Joe Biden, Sen. Bernie Sanders, I-Vt., and Sen. Kamala Harris, D-Calif., gesture before the start of the Democratic primary debate hosted by NBC News at the Adrienne Arsht Center for the Performing Arts, Thursday, June 27, 2019, in Miami.