Kathy Miller, Donald Trump's campaign chair in Mahoning County, Ohio, resigned Thursday after controversial comments she made to The Guardianreverberated across social media.

Miller, who is white, told a reporter that there was "no racism" in the 1960s and said that "if you're black and you haven't been successful in the last 50 years, it's your own fault."

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Elaborating on her point, Miller continued: "You've had every opportunity, it was given to you. You've had the same schools everybody else went to. You had benefits to go to college that white kids don't have. You had all the advantages and didn't take advantage of it. It's not our fault, certainly."

"I don’t think there was any racism until Obama got elected," she added.

Filmed for one of the paper's Anywhere But Washingtonvideos, Miller also slammed the Black Lives Matter movement, saying it was "a stupid waste of time."

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Miller also slammed the Black Lives Matter movement, saying it was "a stupid waste of time."

She tackled the subject of voter turnout among African-Americans too, attributing a lower turnout to "the way they're raised."

Miller resigned after her comments blew up in her face, apologizing for "inappropriate" remarks.

The Trump campaign's problems didn't end with her departure, however.

She was replaced by a black official, Tracey Winbush, who it turns out has said she was "offended as an African-American" by the Republican candidate. She went further, saying that Trump has "denigrated the Republican party" and that she had "bashed the crap" out of him in the past.

The Miller maelstrom is just the latest twist in a campaign that's been dogged with race problems. Earlier this week, boxing promoter Don King accidentally used the N-word while introducing Trump (also in Ohio). And that came hot on the heels of Trump saying that the country's "African-American communities are absolutely in the worst shape that they’ve ever been in before, ever, ever, ever."

Ohio is a crucial state for the divisive candidate. No Republican president has gained the office without winning the state. According to recent statistics, 13.7 percent of the population there is African-American.