I just saw this video on the Day of the Dead by UNESCO (thanks Jim Cottrill) and thought it would be good to share with you.
I think what he says at the end is very important: “This fusion of pre-hispanic religious rites and catholic feasts brings together two distinct universes and allows cultural syncretism between indigenous thinking and the idealogical system imported by the Europeans in the 16th Century.”
You can find more of my resources on the Day of the Dead at this post from last year.