Ginger, thank you. We'll see you later in the broadcast. Now, to a nasty fight over a breakfast cereal. It involved this cheerio's ad, which features a biracial couple. It has produced an outpouring... See More
Ginger, thank you. We'll see you later in the broadcast. Now, to a nasty fight over a breakfast cereal. It involved this cheerio's ad, which features a biracial couple. It has produced an outpouring of nasty comments online. So bad the company had to shut down the comment section on youtube. And linzie janis is covering this story this morning. Reporter: Thousands of more people have come forward to express their outrage over the comments. Dad told me that cheerio's is good for your heart. Is that true? Reporter: It was supposed to be an adorable ad about a little girl trying to make her dad's heart healthier. But this morning, cheerio's youtube pageeaturing the commercial is on lockdown, after the comment section filled up with racial slurs, aimed at the ad's interracial family. One comment reportedly said, more like single parent in the making. Black dad will dip out soon. The ad points to others, referring to nazis and racial genocide. We should be past this issue. 15% of all married couples are mixed races. When you have social media allowing small elements who violently disagree with this, to have their say, you're going to get this kind of a reaction. Reporter: The online bigotry has sparked an outpouring of support for the cheerio's ad. One posted to the facebook page. I can't believe the amount of racist feedback. Pretty sad for 2013. Another wrote, thanks, cheerio's, for showing america the most important ingredient in family is love. Megan hatcher mays, a biracial law student says the offensive remarks may not be all bad. It brings to the surface some of the things we thought maybe were dead and gone. They're really not. Reporter: It may seem crazy to be discussing the commercial. That may be because american companies are behind in reflecting today's society in their advertising. I think that this ad kind of opens the floodgates for advertisers to show more of the very varied fabric of american society. Reporter: Cheerio's issued a statement saying, we know there's many kinds of families and we celebrate them all. And I got in touch with some advertising execs. I heard back from one of them, sir martin thorel. He defended the companies. And that student said it will spark dialogue. A good shift. Great to see you.
This transcript has been automatically generated and may not be 100% accurate.