Apparently none of them even had boats or rafts or anything else, they somehow were given flights to central america and made their way north from there via transport options provided to them.

Impossible to feel pity for people getting what look like free international flights & travel around the world. What kind of 'oppression' is that??

And as always happens in these situations, the financiers ultimately responsible continue to hide in the shadows despite everyone involved probably having a very good idea of who they are. That should be the overwhelming target priority in operations like this, not people crossing rivers or hiding under bridges.