Can intergroup contact build social cohesion after war? I randomly assigned Iraqi Christians displaced by the Islamic State of Iraq and Syria (ISIS) to an all-Christian soccer team or to a team mixed with Muslims. The intervention improved behaviors toward Muslim peers: Christians with Muslim teammates were more likely to vote for a Muslim (not on their team) to receive a sportsmanship award, register for a mixed team next season, and train with Muslims 6 months after the intervention. The intervention did not substantially affect behaviors in other social contexts, such as patronizing a restaurant in Muslim-dominated Mosul or attending a mixed social event, nor did it yield consistent effects on intergroup attitudes. Although contact can build tolerant behaviors toward peers within an intervention, building broader social cohesion outside of it is more challenging.

Can exposure to celebrities from stigmatized groups reduce prejudice? To address this question, we study the case of Mohamed Salah, a visibly Muslim, elite soccer player. Using data on hate crime reports throughout England and 15 million tweets from British soccer fans, we find that after Salah joined Liverpool F.C., hate crimes in the Liverpool area dropped by 16% compared with a synthetic control, and Liverpool F.C. fans halved their rates of posting anti-Muslim tweets relative to fans of other top-flight clubs. An original survey experiment suggests that the salience of Salah’s Muslim identity enabled positive feelings toward Salah to generalize to Muslims more broadly. Our findings provide support for the parasocial contact hypothesis—indicating that positive exposure to out-group celebrities can spark real-world behavioral changes in prejudice.

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Can exposure to successful celebrities from a stigmatized group reduce prejudice toward that group writ large? We study the sudden and phenomenal rise to fame of Liverpool F.C. soccer star Mohamed Salah, a visibly Muslim player. We estimate the causal effect of Salah joining Liverpool F.C. on Islamophobia using hate crime reports throughout England, 15 million tweets from British soccer fans, and a survey experiment of Liverpool fans. We find that Merseyside (home to Liverpool F.C.) experienced a 16% drop in hate crimes, compared to a synthetic control. There is no similar effect for other types of crime. We also find that Liverpool fans halved their rates of posting anti-Muslim tweets relative to fans of other top-flight clubs. The survey experiment suggests that the salience of Salah's Muslim identity is important for reducing prejudice against Muslims more broadly. Our findings indicate that positive exposure to outgroup role models can decrease prejudice.