He uses Macbeth to explain the emotion of the story and movie
Compound word.
Don't mind the "x" and "z" if you look at the included image.
This might help. It is the image.
http://www.enchantedlearning.com/alphabet/wordforeachletter/compoundwords/answerstiny.GIF
Answer:
to highlight the different ways Cinco De Mayo is celebrated. In the passage it talks about parties, festivals, and other celebrations for Cino de Mayo