[MichaelGG]

Angry and Sad are not negative. It's so that when someone posts a picture of "Man beats his dog", you can like it by being Angry with people. Or when "Tidal wave kills 5000 in Elbonia", you can "like" it by being Sad.

For instance, on this particular post, a lot of people want to say "I dislike this" or "This is stupid". They can say "Oh, well you're angry or sad", knowing full well how bad that looks and that people don't do it.