Revenge is a dish best served cold. Or, perhaps, revenge is a dish best served hot, complex, and preferably bloody. There are some people who are happy to do petty things to get back at those who wronged them, and then there are those who put a certain amount of finesse into it and make vengeance kind of awesome.
With the help of Auntie "Genghis Khan" Meme, we dug up some of the greatest acts of revenge in the history of planet Earth. Go forth and smite your enemies armed with this knowledge.