I think with the college crowd it was the Mexicans who were at risk.
any stupid peson looking like they have lots money will get kidnapped there
Stay in the resort areas and don't venture into the towns. The drug wars are very bad right now.
As long as the college students stay in the resort areas, they will not be harmed by the drug cartels. The governments knows there will always be a few who will wander off and get themselves caught up with the drug lords.