I want absolute proof that those men are actually from Venezuela because we have a history of claiming that there are citizens from within a country that are against their current leadership, but later on we discover that they were from neighboring countries.

Case in point Syria the vast majority of their supposed rebels were actually from Saudi Arabia and Iraq.
So for all we know these two men are probably from Michigan and meanwhile there have been millions of Venezuelans that have marched in opposition of American interference that our media is omitting from our view.