Replication Data for: Criminal Fragmentation in Mexicohttps://doi.org/10.7910/DVN/WDS8HBEsberg, JaneHarvard Dataverse2025-01-142025-01-14T15:11:38ZMexico’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 (here fuel theft) then attracted these organizations to new territories. This research contributes to our understanding of criminal control and informs debates over policies aimed at violence reduction.Social Sciences2025-01-14Esberg, Jane2025-01-13CC0 1.0