Mexican immigration figures have reached their lowest point since 2000. Yet, even if as a whole the United States is receiving fewer Mexican migrants, the opposite is true for cities at the border. In this article, I present evidence to show that this sui generis migration pattern cannot be understood using traditional explanations of migration dynamics. Instead, Mexicans are migrating because of security issues, in fear of drug-related violence and extortion that has spiked since 2008. I provide the first estimate of this migration pattern, showing that 264,692 Mexicans have migrated in fear of organized crime activities. In doing so, I combine the literature on migration dynamics with that on violence and crime, pointing toward ways in which nonstate actors shape actions of state members.