My friend grew up in a German enclave in Mexico City. The stories he has. Everyone owns a dog and has bars on their windows in the big city. And it is well known that if you have money to keep an eye on your kids, or they will be targets for kidnapping. And never ever trust the police.
There are a bunch of very wealthy Mexicans who live in Texas because they want to protect their kids. They are illegal and don’t cause trouble and lay low.