People who feel treated unfairly usually do not direct their anger only towards the perpetrator. They frequently unload their aggressions onto uninvolved outsiders who then in turn behave similarly. How can this chain of unfair behavior be disrupted? A team of researchers under the direction of the University of Bonn discovered that writing a message to the perpetrator is one way to regulate emotions and thereby reassess the situation. The results of the study are now published in the journal Scientific Reports.