Lachlan
En-Route
Even if you were carrying a weapon, and they attempted to commit any of the above, the chances of you succeeding against three "mafioso" type males is extremely low and would probably end up in your entire family being injured or worse. It is nice to have a weapon for protection, but they all three very likely had weapons as well.
3 to 1? Those are perfect odds. You haven’t seen enough Liam Neeson movies.
In a populated area, broad daylight, most likely some kids getting some video of white touristy people freaking out because they’re being followed by people with different colored skin. (Because, let’s face it, the OP was a little freaked out, and it was justified.) Be careful out there, either way. Be safe. A good PIC always has an emergency exit, and the OP flew into a box canyon at one point.