The Mexican cartels aren't a threat to tourists. Notice that the murder victim in the opening of that video was a local street vendor. The cartels have lots of money invested in the tourism industry and both the Mexican government and cartels are mutually interested in keeping the resort areas crime-free. They both make lots of money from it and the cartels know that if they start killing white people the Mexican government has to go on the offensive to reassert that Mexico is safe and the DEA - who are hungry for any news headline they can get to fortify their mandate - comes knocking to help. I actually just recently read this
interesting blog post by a white guy who went to a rural cartel town used to farm weed and they were cool with him.
If Ralph gets his ass kicked in Mexico I bet 50 sneeds it'll be by another tourist since that's how a lot of tourists there actually get fucked up. At worst the Mexicans will pickpocket him as he's waddling in a stupor.