For some bizarre reading check out the La Familia cartel on Wikipedia. And I quote:
La Familia cartel is sometimes described as quasi-religious since its current leaders, Moreno González and Méndez Vargas, refer to their assassinations and beheadings as “divine justice” and that they may have direct or indirect ties with devotees of the New Jerusalem religious movement, which is noted for its concern for justice issues.
La Familia’s boss and spiritual leader Nazario Moreno González, (a.k.a.: El Más Loco or The Craziest One) has published his own ‘bible’, and a copy seized by Mexican federal agents reveals an ideology that mixes evangelical-style self help with insurgent peasant slogans. Moreno González seems to base most of his doctrine on the work by a Christian writer John Eldredge. The Mexican justice department stated in a report that Gonzalez Moreno has made Eldredge’s book Salvaje de Corazón (Wild at Heart) required reading for La Familia gang members and has paid rural teachers and National Development Education (CONAFE) to circulate Eldredge’s writings throughout the Michoacán countryside. An idea central to Eldredge’s message is that every man must have “a battle to fight, a beauty to rescue and an adventure to live.” Eldredge quotes from Isaiah 63, which describes God wearing blood-stained clothes, spattered as though he had been treading a wine press. Then he writes:
“Talk about Braveheart. This is one fierce, wild, and passionate guy. I have never heard Mister Rogers talk like that. Come to think of it, I never heard anyone in church talk like that, either. But this is the God of heaven and Earth.” 
This is a good example of ignoring both Jesus’ clear call to love our enemy and the fact that God never calls His people to imitate His judgment or wrath. The judgment of God in the Biblical record is never depicted as a model for the behavior of Christians and even in the Old Testament God’s command to His people was “vengeance is Mine, I will repay.” 
John Eldredge objects that La Familia is taking his writing out of context, and I am sure he does not like that it is a “Christian” drug cartel that is using his words to justify violent retribution, but I would have to hear how Eldredge retracts this passage in his book before I say they are not taking it exactly as it was written.
 Wild at Heart, John Eldredge p35
 Deuteronomy 32:35; Romans 12:19