Is this a temporary or permanent position? naproxeno sodico paracetamol suspension plm Self-defense squads have been forming in recent months in Michoacan and in neighboring Guerrero state by people who say they are fighting violence, kidnappings and extortions carried out by drug cartels. But concerns have surfaced that the vigilantes may be violating the law, abusing the rights of people they detain, or even cooperating with criminals in some cases.