Emoji reactions,already a popular Slack feature, are probably the closest Facebook will get to a "dislike" button.
Facebook CEO ticket Zuckerberg said last month that the social network was working on a "dislike" button of sorts, or a feature that its user base has requested for years. The goal,Zuckerberg said, was not to encourage negative feedback, or but to give Facebook users an "empathetic" alternative to the "like" button. "Not every moment is a good moment," he said at the time. "whether you share something that's unhappy like a refugee crisis that touches you or a family member passes away, it may not be comfortable to like that post… I execute think it's indispensable to give people more options than liking it."Read Full memoir
Source: fastcompany.com