I would hunt down and kill all the gang members and drug dealers and other criminals I could find. Then after a moment of reflection, bite into a block of cheese the size of a car battery :p

^Pretty much the same except I would skin them and hang them off of buildings.

If I was a Predator stuck on Earth(considering this in the future) I would well go to the jungles, specifically the Amazon, I would go on a hunt for humans and other animals so I can have some food to eat and keep my honor.