In May 2022, social media users widely and enthusiastically shared what appeared to be a screenshot of a genuine CNN article, but was in fact a fabrication.
The meme consisted of a cartoon showing Snap, Crackle, and Pop, the well-known gnome mascots of Rice Krispies cereal, along with the following text, presented as the headline of a CNN article:
"Kellogg's spokesperson announces Rice Krispie mascot 'Pop' is now a trans woman."
The fake headline proved hugely popular on Facebook, as demonstrated in the image below, which shows just a selection of posts from May 2022:
It's not clear who created the bogus headline, but it emerged on AR15.com, a right-wing forum, and before that, on the /pol/ section of 4chan — a notorious wellspring of bigoted, far-right memes.
In reality, of course, Kellogg's never made any such announcement, and CNN never published any such story.