Criminal fragmentation in Mexico

Abstract Mexico's war on drugs is increasingly characterized by small, local groups rather than large cartels. This research note introduces new data developed from a narcoblog —a citizen journalism website—on more than 450 criminal organizations operating in Mexico between 2009 and 2020. I use the data to test prominent theories of fragmentation, providing suggestive evidence that drug war policies contributed to a more complex conflict: kingpin removals were correlated with the emergence of smaller groups; profit opportunities (in this case, fuel theft) then attracted these organizations to new territories. This research contributes to our understanding of criminal control and informs debates over violence reduction policies.