Keith Ellison offered a direct, unequivocal repudiation of a former Ku Klux Klan leader's endorsement.
Ellison, a Democrat who represents Minnesota's 5th Congressional District, is running to head the Democratic National Committee.
And on Sunday, former KKK grand wizard David Duke tweeted:
"Keith Ellison, Sally Boynton Brown or Jehmu Greene would all be excellent choices - I really like Keith though... I mean, at least he knows."
Duke doesn't expound on what Ellison "knows," though people speculate it's probably a reference to the congressman's past ties to Louis Farrakhan and Nation of Islam, which he's been criticized for (and he's since apologized for, saying he was wrong).
On Tuesday, Ellison tweeted an apparent response to Duke's Twitter endorsement:
It's a pretty clear, direct rebuke of Duke, who is known as a white supremacist and anti-Semite, and served in the Louisiana House of Representatives for one term.
Duke made headlines for strongly endorsing Donald Trump during his run for president last year. Trump initially faced heat, especially from Democrats, for not immediately disavowing Duke's support, though his team later came out with a stronger statement doing so.
Some people on social media were wondering if Ellison would disavow Duke – and if he didn't, should he face the same criticism that was thrown at Trump?
There are also theories Duke is simply trying to tarnish Ellison's brand and sink his chances of getting the DNC role.
Duke, by the way, argues the media distorts his record, writing: "The fact is that I am not KKK, and I have had no association with any Klan group for four decades. It is true that as a young man, over 35 years ago I was in a totally nonviolent KKK organization in Louisiana."