Mexican police guard the U.S. vehicle that was attacked Tuesday by suspected drug traffickers in Santa Maria del Rio, Mexico. One U.S. Immigration and Customs Enforcement agent was killed and another was wounded.
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Crime-scene barrier tape is seen at the University of Texas at Austin after a gunman opened fire and then killed himself in September. Such incidents prompted lawmakers in the state to push legislation removing "premises of higher education" as gun-free zones.
This photo, provided by a resident of Ciudad Mier who did not want to be identified, shows a burned-out police station in the town. A brutal turf war between the Gulf Cartel and the Zetas drug gang has led to an evacuation of the Mexican border town.
U.S. Border Patrol agents patrol the Rio Grande River, passing under the World Trade Bridge. Every 15 seconds one truck crosses the eight-lane bridge, which connects Laredo, Texas with the Mexican border town of Nuevo Laredo.
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