The Anti Rumor Strategy (ARS) is a long-term process of social change that proposes to explore and influence the causes of xenophobia, taking into account specific socio-cultural contexts. Its purpose is to prevent discrimination, improve coexistence, and harness the potential of diversity by triggering a change in perceptions, attitudes, and behaviors among the general population and specific target groups. The ARS was first promoted in 2010 in Barcelona with a current presence in six Spanish cities and 12 in Europe.