Towards an applied theory of violence prevention -- Reporting and warning about deadly possibilities -- Organizing against ethnoreligious violence in Ahmedabad -- Overcoming gang violence in Chicago -- Counteracting ethnoreligious violence in Sri Lanka -- Crowdsourcing during post-election violence in Kenya -- Foisting tribal violence in East Africa -- Comparing the approaches -- How to intervene effectively -- What to do when violence prevention is unlikely to work -- Concerns about misallocation of resources -- Future directions and recommendations.