My school is a little more than 90% Latino, primarily Mexican-American and very few of my students knew the history (or remembered) and significance of Cinco de Mayo. We had a short lesson and discussion and by the end I think they were all proud of how Mexico's little ragtag outnumbered army, beat the French(who had the strongest army at the time). School celebrated with a food sale day, a car show and some dancing the Caballo Dorado.
A-ha: Obsessing about what I think other people are thinking has got to be the most tiring thing ever. Thank god I don't fall there very often.
Reminder: Listen, its more than just not speaking.