Such use has taken place at least since January 2016 (the ‘El Chapo’ takedown) per YouTube posted footage, if not earlier-in their raids on cartel kingpins and operatives.
Select Mexican military and federal police units have been utilizing body cams for some years now for after action review, prosecutorial, and public informational (i.e., state narrative) purposes.
Mexican Cartel Tactical Note #39: GoPro Video Social Media Posting of Cártel Santa Rosa de Lima (CSRL) Tactical Action against Cártel Jalisco Nueva Generación (CJNG) in Guanajuato - Indications & Warning (I&W) Concerns
