Earlier by James Fulford: Happy Cinco De Mayo: Please Don't Riot! (And If You're Illegal, GO HOME!)
In 2005, I wrote this on Cinco de Mayo:
...to the citizens of the Estados Unidos de Mexico who are still in Mexico. And also to those of their compadres who are legal residents of the United States. As for the rest of you, i.e., the large Mexican illegal population, wouldn't this be a good time to return home to celebrate your national holiday? They miss you. Most Americans wouldn't.
Of course, if you're a legal immigrant, you can also go home. Cinco de Mayo, by the way, is not Mexican Independence Day (that's September 16) and is not that big a national holiday in Mexico, it commemorates "the Mexican Army's victory over the French Empire at the Battle of Puebla, on May 5, 1862, under the leadership of General Ignacio Zaragoza."
As the post at the top explains, when Americans celebrate Cinco de Mayo by wearing Mexican clothing, especially girls in sombreros, it's racist cultural appropriation:
nothing worse than a white girl in a sombrero pic.twitter.com/DXCdXLuUoP— Girls just wanna #DEFUND (@hanno__w) May 5, 2016
However, some people don't care about cultural appropriation—this 2016 tweet by Candidate Trump made the Left and La Raza crazier than usual: