I know a little bit since I used to live with a Mexican roommate. They're economy is in pretty bad shape and they're are in debt worse than anything I've ever heard of.
I know you can't really go to the authorities and expect them to do anything in some countries, but the thing is vigilanteism is still going to put you and a lot of other innocent people in harms way. We rely on our FBI and other bodies to perform their job because they're professionals who are trained, qualified and know what they're doing. The FBI and other authorities know how and are actively involved in minimizing the risk to themselves and others. These kids are just trying to do dangerous shit they know nothing about. If they can do what they say they're gonna do then they can put their skills to much better use working for the right people, instead of dangerously running about. Honestly, they're kind of scary, whatever side they say they're on.
If you wanna uphold the rules, do it by the rules, anything else is risky, at best.
As Callie said, the rules we have in the US were paid for with blood. A lot of it. The US was honestly a lot better a century ago than much of Latin America is today. I am not sure why you are referring to the FBI in a thread about Mexico, for example. The Mexican version was the AFI, and you can look up how legitimate they are
. In 2008, Rodolfo de la Guardia García was arrested for possibly leaking information to a drug cartel. They're the PFM now, but I can't imagine the problems have gotten better.
You want to trust them?
The rule in many places in Latin America is 'do you have guns'. You want protection from the 'police', you better make enough bribes to the right people. Though, in many cases, the amount of the
gift will be negotiable depending on how rich you are. In some cases, though, they simply can't be trusted, or just tell you to go take it back yourself. Which can be a problem if said other person is more well armed than you are.
You then have to find help, who are not the police, pay them appropriately, and if you don't
want the other person killed, you have to specifically demand that.
I have first-hand accounts of this sort of crap, from family members, friends, and general acquaintances. You try going to the authorities in these areas for these sorts of problems, you better be pretty damned powerful.