As a candidate for the Mexican presidency, Andres Manuel Lopez Obrador (aka AMLO)says Mexicans are taking back their "lost" lands via means of "human rights".
This clip was uploaded in February, 2017 to a channel named Reconquista.Mx. This was early on during the campaign for the Mexican presidency.
https://www.youtube.com/watch?v=7U1QV7hbMk4