It will only work if the people in Mexico are armed.
I have to ask, which people and what are they to do with their guns?
The Zapatistas of Chiapas have guns. Though we have not heard much about them recently . . . or maybe its really because I have not paid attention . . . the Zapatistas have pretty much set up, without a promised peace agreement with the Mexican government, their autonomy within Chiapas.
Might be interesting to know just how many revolutionary groups are active in Mexico right now. The newspaper, El Universal, recently claimed that the policeman lynched by mobs in San Juan Ixtayopan were not really there taking pictures of suspected drug activity. They were in the Mexico City suburb gathering information about the EPR, the Popular Revolutionary Army, which some consider to be a very serious threat.