MikeAqua: If you are visitor to another country you break the law (which includes associating with criminal gangs) at your peril, don't whine about the consequences.
Except that there needs to be some kind of judicial process to prove that you did in fact break the law. Did he in fact associate with the gang? Was that gang illegal? And the first step in that process is a charge being laid.
Except in tinpot dictatorships and Middle Eastern fiefdoms and so on, of course.