Yep...Mehicanos have never been known for their...er...brilliance. Carrying the Mehicano flags during their great protest march backfired. And if they want to stay home on May 1, who gives a flock?
If they do stay home and boycott and there's not a noticable difference, that might really hurt them.
They can stay home and then go back to Mexico.
If they take the day off, then the employer has every right to assume that they quit.
There will be another 10 Mexicans looking for that same job the next day.