Kellogg Co. is pulling its ads from the website Breitbart News, the right-wing news organization whose former chairman Steve Bannon was tapped as a top adviser to President-elect Donald Trump.Brands that advertise on Breitbart have drawn flak in recent weeks, with activists saying the website espouses racist and anti-Semitic views. A screen shot showing an advertisement for Kellogg s Frosted Mini Wheats was part of an online campaign to get marketers to abandon the site. We regularly work with our media-buying partners to ensure our ads do not appear on sites that aren t aligned with our values as a company,  said Kris Charles, a spokeswoman for Kellogg, which also makes Frosted Flakes and Special K cereal.  We recently reviewed the list of sites where our ads can be placed and decided to discontinue advertising on Breitbart.com. We are working to remove our ads from that site. AppNexus Inc., one of the biggest digital advertising services, barred Breitbart from using its ad-serving tools earlier this month because it felt the publisher violated its hate-speech rules.AppNexus scrutinized Breitbart s website after Bannon was given the White House post. The digital ad firm decided the publication had breached a policy against content that incites violence, according to a spokesman for the company. Kellogg declined to name the third-party company that places its digital ads.Kellogg is the latest major brand to pull its online advertising from the news site. Other companies   including Allstate, Nest, EarthLink, Warby Parker and SoFi   have also blacklisted Breitbart from showing their ads, according to Digiday.The site had 19.2 million unique monthly U.S. visitors in October, up from 12.9 million a year ago, according to ComScore Inc. Breitbart doesn t rely on subscriptions, suggesting that advertising is a major source of revenue.Many marketers buy online advertising through third-party tech companies that distribute them widely across the internet, so they may not be aware of all the websites where they appear. But they also have the ability to control which websites display their ads. The creator of the Twitter account Sleeping Giants has been taking screen shots of ads appearing on Breitbart in an attempt to pressure those brands to take their ads down.Not all brands are shying away from advertising on Breitbart, though. After a screenshot showed a Nissan ad on the website, the automaker said in a statement that it  places ads in a variety of sites in order to reach as many consumers as possible. The placement of Nissan advertising is not intended to be a political commentary and there are no plans to change the advertising mix at this time,  the company said.   Bloomberg