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Democratic presidential nominee Hillary Clinton tweeted a fiery new video attacking rival Donald Trump for his reported support among white nationalists, airing part of an interview with a prominent leader of the Ku Klux Klan.

"There's a reason the most hateful fringe of the right wing is supporting Donald Trump," Clinton writes in the Tweet.

The video, posted to Twitter, was retweeted nearly 5,000 times within the first two hours.

“Donald Trump would be best for the job,” the unnamed Imperial Wizard of the Rebel Brigade of the KKK, says in the video.

David Duke, a former KKK leader and radio host who is running for U.S. Senate in Louisiana, is heard calling a vote for anyone but Trump “treason to your heritage.”

Clinton also takes aim at Trump for appointing Breitbart News chief Steve Bannon as his campaign’s CEO, using tape of political analyst Jackie Kucinich calling Bannon’s news site “a field day for the alt-right [movement], which is racist and all other kinds of –ists.”

Shortly after the video went live, Trump's campaign responded, calling Clinton's use of "horrific racial images" a "disgusting new low."

"This type of rhetoric and repulsive advertising is revolting and completely beyond the pale. I call on Hillary Clinton to disavow this video and her campaign for this sickening act that has no place in our world," Trump said, through advisor Rev. Mark Burns.

The video by Clinton comes on the heels of her saying in a CNN interview last night that Trump is "taking a hate movement mainstream."

Meantime, at his rally in Mississippi, Trump called Clinton a "bigot who sees people of color only as votes."

What do you think of Clinton’s new ad? Let us know in the comments.

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