I figured out how all those thousands of migrants got across into Mexico without being stopped at that bridge we saw. It's because there's another bridge entirely within Guatemala a few miles up the river. Once across the river, they can scatter off the road and go around the border gate.

Get on Google Maps and look for "Ciudad Hidalgo, Chiapas". It has to be Chiapas because there's another one somewhere else in Mexico. There's the town, then to the east is the Suchiate River, and then the Guatemalan town of Tecun Uman. We've been told all about this crossing in the news. The international border goes down the middle of the river, and there's the gate across the bridge that we've all seen, where the caravan was stopped.

But now zoom out and go north about a mile along the river, just north of the towns, and you'll see the international border goes over onto the land to the left (west) of the river, and there's the Route 2 bridge across the river. No gate across it, because that bridge is entirely in Guatemala.

And that's where the mob went after they were stopped on the bridge farther south and regrouped in Tecun Uman. They went north on Guatemala Route 6 and turned left at Guatemala Route 2 (notice that the Aduana (customs) on Rt. 2 is maybe 2000 feet to the RIGHT of this, so they're already past the Guatemala border check here), marched across the river and then scattered onto the land and walked across the unfenced LAND border into Mexico. Then straight onto Mexico Route 200 to march north toward Tapachula.