Battle of Flowers

In April I was in SA for Fiesta week. We took the whole family and got to participate in lots of the festivities. One of these festivities that struck me as odd is the Battle of Flowers Parade. You see, this parade is celebrating the battle of San Jacinto I believe and when Texas got their independence from Mexico. Yet, there are a LOT of people that look like they are descendants of people from Mexico at the parade. It just seems weird to me that they would be so eager to celebrate the defeat of their ancestors.