Donald Trump quoted a tweet on Saturday linking Hillary Clinton to the KKK.

Trump quoted a Diamond and Silk tweet from Thursday to attack Clinton. Diamond and Silk are stage names for two African-American video bloggers who support Trump.

"@DiamondandSilk: Crooked Hillary getting desperate. On TV bashing Trump. @CNN, she forgot how she said a KKK member was her mentor," Trump tweeted.

The KKK member that the tweet appears to be referring to is former West Virginia Sen. Robert Byrd. Byrd was a Ku Klux Klan member in the 1940s and later disavowed the KKK and repeatedly apologized for his involvement. In 2010, after Byrd's death, Clinton made a video in which she described him as her mentor.

Trump's decision to spotlight criticism of Clinton's ties to Byrd comes after Trump called her a "bigot" in the GOP nominee's attempt to reach African-American voters.

Amid efforts by the Clinton campaign to tie Trump to racists, Fox News Saturday re-aired footage from several months ago of a man who appears to be a white supremacist supporting Clinton.