When was the last time you were really angry? Some might have to go way back in their past; others just this morning, depending on character or circumstances. Researchers have found that anger is the emotion that is most contagious on social media, more than joy or sadness. Unlike frustration, anger causes us to strike back when we feel diminished, to pursue righting a wrong, sometimes with violence. What can be an antidote? Some of our contributors shared how to embrace anger in themselves and others, and how channeling it in a constructive way can give rise to positive change.