In Venezuela (per Chavez) it's called "Day of Indigenous Resistance!"
BTW, Día de la Raza ("day of the race"), commemorating the first encounters of Europe and Native Americans, was first celebrated in Argentina in 1917, Venezuela in 1921, Chile in 1923, and Mexico in 1928.
It's from the 1920's? Correlating with what, I wonder? It sounds really BAD in English.
I definitely am putting up Ferdinand and Isabella's flag.