A group of Ron Paul supporters has released a shocking ad attacking former Ambassador to China Jon Huntsman, which is certain to be remembered as one of the most offensive political ads in history.

“Jon Huntsman’s Values” labels Huntsman as an un-American “Manchurian candidate,” who can’t be trusted due to his ties to China. In between various clips of Huntsman speaking Chinese, it also manages to attack Hunstman for adopting two daughters from Asia and for his Mormon faith (“Shares Our Values? A Man Of Faith?” the video asks,) and concludes with a doctored image of Huntsman dressed as a Maoist soldier.

As Mediaite puts it, the ad “makes ‘Willie Horton’ look like Will.I.Am’s ‘Yes We Can’ ad.” In an election that has turned deeply negative, this spot is the most deplorable yet.

The ad was produced by “NHLiberty4Paul,” a group of Ron Paul supporters which does not appear to be affiliated with the Paul campaign or any pro-Paul Super PAC.

Hunstman has publicly spoken out against the ad. “If someone wants to poke fun at me, that’s OK,” Huntsman said at New England College’s “College Convention.” “What I object to is bringing forward pictures and videos of my adopted daughters and suggesting there’s something sinister there.”

The Paul campaign has distanced itself from the spot. “The video was utterly distasteful and no one who actually supports Dr. Paul’s principles would have made it,” Paul’s New Hampshire spokesperson told the Associated Press. Still, that statement will provide little reassurance to voters who were convinced by Paul’s racist newsletters that the libertarian Republican holds uncomfortably close to ties to bigots.