Here's an idea for Cinco de Mayo in Arizona...

Demand all white people getting sloshed at chain restaurants provide documentation that they know what Cinco de Mayo is all about. But only if the officers have reasonable suspicion that the drinkers might not know, such as, they're white. If they're found to be in violation, they're deported to Utah, and the Corona can remain in the hands of those who have proven themselves willing to learn its origins and assimilate to its customs.

Mexican immigrants should bombard the police with lawsuits if they feel the cops aren't doing enough to enforce this.