Progressive group MoveOn called on Sen. Bernie Sanders (I-Vt.) to renounce the presidential endorsement of popular podcaster and comedian Joe Rogan.

The group, which endorsed Sanders in 2016 and is fueled by many of the same progressive activists who have backed the Vermont senator's White House bid, called on Sanders to reject the endorsement over Rogan's past discriminatory comments.

"It's one thing for Joe Rogan to endorse a candidate. It's another for @BernieSanders' campaign to produce a video bolstering the endorsement of someone known for promoting transphobia, homophobia, Islamophobia, racism and misogyny," MoveOn tweeted Saturday.

"We urge Sen. Sanders and his campaign to apologize and stop elevating this endorsement. We stand in solidarity with folks hurt by this."

Sanders has received scrutiny for the endorsement after his campaign circulated a video touting Rogan's support.

"He's basically been saying the same thing his whole life. And that in and of itself is very a powerful structure to operate from," Rogan said in the clip.

The comedian has come under fire for past comments insulting a range of groups, including the transgender community and African Americans.

"We get out. We're giggling, 'We're going to go see "Planet of the Apes." We walk into 'Planet of the Apes.' We walked into Africa," Rogan said in a 2013 podcast clip that was resurfaced after his endorsement before clarifying that there were "no white people in the theater."

The Human Rights Campaign (HRC) also called on Sanders to renounce Rogan's endorsement, specifically citing Rogan's past comments.

"Bernie Sanders has run a campaign unabashedly supportive of the rights of LGBTQ people. Rogan, however, has attacked transgender people, gay men, women, people of color and countless marginalized groups at every opportunity," said HRC President Alphonso David. "Given Rogan's comments, it is disappointing that the Sanders campaign has accepted and promoted the endorsement."