@NordRoi, I assume you are referring to the drug war that's going on? It was already in full swing way back when I went. Only that at the time the shootings weren't as open and certainly involved tourists.
The real danger came from corrupt police and hold ups at remote beaches.
We camped on one remote beach half way down when we had a visit by some Federales (the Mexican Federal Police). They rocked up in a Humvee heavily armed with automatic riffles. After sussing us out and checking passports they asked if they could stay at our campfire for the night. They told us they cruise the coast line for drug drop offs from yachts coming up from Columbia. They also told us to stay well away from people that don't look like locals or appear to be carrying firearms.
To be honest I don't think i'd want to mess with those guys. They make the NSW police look like kindergarden teachers. That said it does make you wonder how much more ruthless the crooks are given the police isn't really gaining any ground in the drug war.
While in San Jose del Cabo we did see the body of a police officer that had been gunned down. In the paper is was insinuated it was related to a drug cartel.
Yet, the locals I meet while travelling there where super friendly. In the end it's like any country. Keep your wits and stay away from areas that are know to be unsafe. Hell I know areas in LA I wouldn't venture into without an armoured car.