There were many things that surprised me during a State Department-sponsored trip to Mexico this week, where we took a tour of U.S. border security operations before heading into Ciudad Juarez and Mexico City to meet with groups organizing against the spiraling violence in that country. I was surprised, for instance, that a representative from one of the Juarez drug cartels did not meet me at the airport, a block-typed sign with my name on it in one hand and a diamond-handled .45 in the other. I was surprised by the Border Patrol video with shrieking death metal background music. I was surprised by the mixture of courage and nonchalance of the college students living in Juarez who have grown sick of the murders and extortions and kidnappings in their city and who want desperately for the world to know that these cartels do not define them. I was surprised that traffic lights in Mexico City are optional …