That's BS Kyle. Mexicans have far less rights than you do in California or anywhere for that matter. Go ask one of the fellows picking fruits and veggies how many rights he has. Sure there are way too many latin americans gaining illegal access into the US right now, but that has no bearing on what types of human or labor rights they have. (as a non-citizen they have practically none)
As for the incident, kids get sent home all the time in America for wearing clothes that "could be offensive". Sometimes it's justified sometimes it isn't. The VP said she thought she was looking out for the interest of student body. She made a mistake in my opinion. But people want to make a mountain out of this mole hill in light to Arizona's recent blunder.
But this isn't a case of "affirmative action" it's far from it. The kids that were sent home were of Mexican origin. We really need to sit back as a country and take a look at the situation before going off and screaming all this white entitlement nonsense. Immigration really needs reformed though. As of right now there are two options for working in the US, entering legally or illegally. With that said, deportation and the building of walls isn't really going to be much of a game changer.
The government needs to work with the private sector (especially corporations in the food production industry) and the Mexican government in order to come up with some sort of work-share program that gives those who wish to work in the US more options than just sneaking in. Perhaps some sort of a work permit in which people can come and go (along the border), in addition to seasonal and rotative work permits for pickers and meat packers. And then tax the workers of course.
This would piss of the USA all white = USA alright activists, but let's be honest here white folks aren't interested in picking tomatoes or spraying pesticides.