Harris calls narrative that black voters are homophobic a trope.

Democratic presidential candidate Sen. Kamala Harris speaks during the Iowa Democratic Party's Liberty and Justice Celebration, Friday, Nov. 1, 2019, in Des Moines, Iowa. (AP Photo/Nati Harnik)

Responding to comments made by a House Democratic leader about Pete Buttigieg’s favorability in South Carolina, Sen. Kamala Harris on Monday dismissed the suggestion that African Americans are more wary than other demographic groups of a gay candidate…