"I think people have asked about the dislike button for many years. Today is a special day because today is the day I can say we're working on it and shipping it," Zuckerberg said.
He told the audience that the company realized people want to express emotions other than positivity, especially around posts about sensitive subjects like the Syrian refugee crisis.
He didn't give further information as to what the "Dislike" button might look like. We could look to the new "reactions" product from workplace chatting app Slack as a possibility. Slack's reactions allow people to comment with a full range of emojis on others' posts, which leads to everything from check marks to laughter and food images to animated hands clapping.