They Weren't Mardi Gras Indians...

But There were Indian dancers at Cinco De Mayo last weekend. With colorful costumes and drums what more could you want? 

My guess as to what is going on would be some kind of reenactment of a conquistador story. Those were not good times for the poor old Indians. You know how it goes. Everything is going well for you.  Some guys show up, they want your stuff and want stuff you don't have. There are nasty. You get sick. If you don't get sick they shoot you. Things aren't like they used to be anymore and the new ways don't seem like much of an improvement. 

I think this cycle is still being repeated in various parts of the world today.