go look up :
a modest proposal by jonathon swifti thought it was hilarious....i mean..if you GET satire..it should be an okay read...i had to write a piece for my jr. AP english class and i entitled it: an indecent proposal...i wrote about the pointless of tiny pieces of cloth covering celebrity bodies and proposed that we all go naked.

you`ll get what i`m talking about after you read swift`s piece, if you haven`t already. it was fun. but like someone suggested, the onion.com has good examples.
i wouldn`t write about politics unless you are an amazing writer. you might come off as immature, esp. considering you aren`t sure how to write satire yet...just a suggestion. go with something you know.