Colombia's Mobile Anti-Riot Squad (ESMAD), backed up by two armored personnel carriers, invaded the campus of the University of Antioquia in Medellín, where students were holding protests against the imposition of new ID cards Sept. 15. The ESMAD used tear gas, and some students responded with hurled rocks and bottles. At least one student was seriously injured. On Aug. 26, ESMAD forces invaded the poor Medellín district of Comuna 13, briefly battling with residents who fought back with machetes and clubs. Two were injured and two arrested. (Rebelión, Mexico, Sept. 17; El Pais Vallenato, Valledupar, Sept. 15; El Heraldo, Barranquilla, Aug. 26)

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