Very brief but useful introduction to the subject of the Magonistas and the Mexican Revolution.
After the turn of the century, cross-border solidarity became an important political movement, as Mexicans began migrating to the U.S. as railroad workers, miners and farm laborers. The Flores Magon brothers, on the run from the regime of Porfirio Diaz, began organizing what became the uprising in Cananea and the Liberal Party in the communities of railroad workers in Los Angeles, St. Louis and elsewhere north of the border.
The two were active participants in the radical socialist and anarchist movements of the day, and were associated with the Industrial Workers of the World. After the Cananea rising, J. Edgar Hoover pursued them in his first campaign of organized anti-labor and anti-left repression. The brothers were caught, tried and sent to Leavenworth Federal Prison, where Ricardo died.
http://talkingunion.wordpress.com/2011/05/27/the-hidden-history-of-u-s-mexico-labor-solidarity/