Breitbart is encouraging a boycott of Kellogg's products after the cereal maker said it would no longer advertise on the news and opinion website, formerly run by President-elect Donald Trump aide Steve Bannon.
The Kellogg Company cited company "values" in explaining its decision; a spokeswoman said Thursday it has "nothing to do with politics."
Breitbart has been condemned for featuring racist, sexist and anti-Semitic content.
Breitbart said Kellogg's decision amounted to "economic censorship of mainstream conservative political discourse" and "as un-American as it gets." It launched a #DumpKelloggs petition Wednesday calling for a boycott of Kellogg's.
Breitbart said Kellogg's decision represents "an escalation in the war by leftist companies like Target and Allstate against conservative customers" and their values.
Target and Allstate also have reportedly pulled ads from the site.
Traditionally, news organizations maintain a separation between their editorial and advertising operations in order to avoid potential conflicts.
Jean Smart, Ariana Grande, Michael Keaton among hosts for “SNL” season 50
Fresh off her Emmys win, Jean Smart will kick off the landmark 50th season of "Saturday Night Live."
NBC on Thursday announced the lineup of hosts for the season, which premieres Sept. 28. Joining Smart on the first show will be Jelly Roll as the musical act. He was also at the Emmys, singing during the ceremony's in memoriam segment.
It will be Smart's first time hosting "SNL."
Comedian Nate Bargatze will host on Oct. 5, with Coldplay as the musical guest.
Ariana Grande will host Oct. 12, with musical guest Stevie Nicks.
"Beetlejuice" star Michael Keaton will host on Oct. 19, the last show before Halloween, and Billie Eilish will be that night's musical guest.
The host on Nov. 2 will be "SNL" alum John Mulaney, with breakout sensation Chappell Roan as the music guest.
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