The more is uncovered about the murder of ICE Special Agent Jaime Zapata, the worse the details become. Now we learn that he and the other agent shot earlier this week were unarmed in one of the most dangerous regions on earth, driving a big SUV with US government plates. If thatâ€™s not a big crime magnet, then what is?They had no weapons because the Mexican government disallows it. Why does Washington permit US officers to be forced to work in such dangerous and demeaning conditions? US agents should be pulled out of Mexico entirely unless they are allowed to protect themselves.Was the murder a purposeful assassination to send Washington a message that Mexican organized crime does whatever it wants?Perhaps the Zeta cartel wanted to tell Janet Napolitano what she could do with the â€?bring it onâ€? warning in her El Paso speech of January 31 (Secretary Napolitano Warns Cartels).She took that occasion to declare, â€?So today I say to the cartels: Donâ€™t even think about bringing your violence and tactics across this border. You will be met by an overwhelming response.â€?So Mexican gangsters may have thought a response was in order. Or maybe they just felt like blowing away some people.