Bad guys didn't get the memo....
The sad truth is that the bad guys did not get the "hands off" memo concerning mongers. They did not get informed that it was NOT OK to do anything to mongers who are visiting the Zona Norte and to instead focus on other people who would not fall into the monger category.
Go to any part of the world where high risk activities are at play (like prostitution for example) and you'll have an interesting time working out the odds of a safe trip.
Mexico does not have a monopoly on crime or violence. There are countless posts about criminal activity in and around the Zona. There is enough information to provide most anyone up to a 9 fog factor with the information they need to make an informed decision.
Mongers need to review the information available and then govern themselves accordingly, not act surprised or concerned when something happens that they expected to happen anyway.
I spend a LOT of time out and about here in Tijuana. All day and many nights on the streets and highways in Baja. I am not paranoid; I keep the odds in my favor the same as when I lived State-side.
Country John