You can read an article about it here.
The slightly confusing thing is that they decided to call this holiday, literally, "Corinthians Independence Day," but they said it's to commemorate the team finally winning the Libertadores championship, which is a tournament involving city-level teams from around South America. I'm not sure what the team has gained independence from, but let's just go with it.
You see, the city government decided to set this holiday on the 4th of July -- the same as American Independence Day (you know, back when we got independence from England, which means the name makes sense).
Corinthians happens to be Alexandre's favorite soccer team (though he has asked me to point out that he thinks this holiday is ridiculous). You all know that I love forcing Alexandre to celebrate American holidays, so I think we can totally make this double Independence Day work. I am all about an excuse for a party.
More importantly, I think American Independence Day celebrations and Corinthians games have a lot in common. Here, I've made a Venn diagram to illustrate:
|click it to enlarge|
As you can see, I had a lot of fun thinking of things they had in common, and then I got bored and didn't bother of thinking of many differences.
So party at my apartment complex's little party gazebo on July 4th! Be there or be square.