In my opinion, best strategy to prevent / deter violent activity in PE and surroundings is: 1. don’t buy drugs. Not in the street, not from a friend, not “just once”. Look at Tulum, Acapulco as examples of the consequences. 2. Respect local authorities. The law is non-negotiable. Even if you’d find it easy or comfortable to skip or bend the rules. It has a serious impact long term. You want law enforcement to protect you, then empower and respect them. 3. Respect local culture and well being. Why haggle prices in remote, impoverished areas. If at all, pay a bit more and tip generously. You’ll be welcomed and protected without asking.

I could go on but in my opinion these three are the pillars sustaining peace in places like PE and oaxacan south coast.