Social Media Zuckerberg announces Facebook ‘dislike’ button The social network’s CEO said the tool should be used to ‘express empathy,’ not to ‘downvote’ posts. By Beki Winchel@bekiwekiSept. 16, 2015 SHARE To read the full story, log in. Become a Ragan Insider member to read this article and all other archived content. Sign up today Already a member? Log in here. Learn more about Ragan Insider.