Like the white assholes deliberately wearing American flag paraphernalia on Cinco de Mayo aren't trying to be assholes, and the Mexicans are letting them know it. It would be the same if a KKK member showed up at an NAACP rally in full sheets. The black people would let them know that they're assholes.
The two examples are entirely irrelevant to one another. Mainly, one is a captive audience and the other isn't. Furthermore, you comparing students wearing an American flag shirt in protest to the school pushing a foreign holiday on them to the KKK is what is called Ad Absurdum.
Conservatives are assholes who shit all over everything. Look at all of your failed wars.
Conservative wars like Vietnam?
From what I've gathered from your comments so far you are a far more hateful individual than these students.