and valente rojas is one of many documenting them for the press.ery night, rides around waiting for a phone call or a radio message telling him that there's another one. so who's buying drugs? who's selling drugs to who? [ speaking in a foreign language ] >> here, you kill each other for a reason. it's business? >> si. >> more mexican civilians have been killed since 2006 than all the american military lost in ten years of the vietnam war and eight years of wars in iraq. what do you do if you're one of these cops, you're driving around one night, you see some guy outside of a bar beating somebody or disturbing the peace, you start to arrest him and he's got a diamond studded pistol, it's got his name on it. now you realize you've just arrested somebody with serious connections. what do you do? [ speaking a foreign language ] >> let him go? >> si. >> why do they always pull their pants down? our local fixer, alex, is here to translate. >> in this case, he thinks that they pull the pants down so check for weapons. >> they are loading them into the sh