Donald Trump took to the stage at the National Association of Black Journalists’ annual convention in Chicago Wednesday for an unhinged interview in which he openly attacked the panel of Black women journalists who moderated the discussion. He accused ABC News reporter Rachel Scott of being “nasty” as he delivered this stunning response to a question about his Democratic opponent, Kamala Harris.

Donald Trump: “I didn’t know she was Black until a number of years ago, when she happened to turn Black, and now she wants to be known as Black. So, I don’t know: Is she Indian, or is she Black?”

Rachel Scott: “She has always identified as a Black woman.

Donald Trump: “But you know what?”

Rachel Scott: “She went to a historically Black college.”

Donald Trump: “I respect either one. I respect either one. But she obviously doesn’t, because she was Indian all the way, and then, all of a sudden, she made a turn, and she went — she became a Black person.”

Rachel Scott: “Just to be clear, sir, do you believe that she is a” —

Donald Trump: “And I think — I think somebody should look into that, too, when you ask — continue in a very hostile, nasty tone.”

Separately, Trump claimed he was the best president for Black people since Abraham Lincoln. Kamala Harris responded to Trump’s comments as she spoke Wednesday evening at an event of the historically Black sorority Sigma Gamma Rho in Houston, Texas.

Vice President Kamala Harris: “The divisiveness and the disrespect. And let me just say, the American people deserve better. The American people deserve better.”