dislike button

Selected users now have the option to flag posts to Facebook.
Facebook on Thursday announced the rollout of a new "Reactions" button, which lets users respond to posts with six emoji-inspired faces, as well as the traditional Like.
There's no "thumbs-down" option, but at least there's an "angry" face and a "wow" face.
Facebook is considering adding a feature that people have wanted for a long time now: a "dislike" button. But don't hold your breath.
Facebook just released a "dislike" button -- of sorts.
How do we bring real meaning to even perfunctory encounters and make those little annoying thumbs really powerful?