One of my great grandfathers was a Welsh collier, a miner who traveled around North America working in mines.
The whole family traveled with him and while down in Mexico working at a mine, Pancho Villa shows up.
Villa gathers all the non-Hispanic miners and their families together at gunpoint, forces everyone into the mine, then starts to emplace TNT around the mine entrance. He told the miners he was going to bury everyone alive.
Before the mine was blown, Pershing showed up to their rescue.
When my great grandfather and family escaped from there they headed for British Columbia, Canada, via California. My grandmother told me, she and one of her sisters decided they had had enough of mining camps and while in San Francisco remained to make it their home. It was there she met my grandfather, a Petty Officer in the USN.
We were stopped at a road block in Mexico. They said they were the Mexican army, I guess they were because they let us go afterward and didn't steal anything.
While they searched our truck they held automatic weapons pointed at us. That will make you stand still! I figured we were dead while we waited for them to finish looking for whatever in our truck.
That was one of the events that made us decide to never go to Mexico again.