I listened to the news report. Some of the mexican-american students did complain about the shirts. However some of the “white kids” wearing them were, in fact, half-mexican. The outrage is manufactured and by the end of the day the principal apologized and retracted the decision (although by then school was out).
This is one of those eye-rollers for me. I am pretty sensitive to others especially when it comes to race but Cinco de Mayo is not some widely celebrated holiday except here in the states. So they wore american flag apparrel BFD!