Faceblock is an extension for Google Chrome that blocks posts about stuff you don't like in your Facebook Newsfeed.
Add the name of a politician, pop star or somebody else you are annoyed reading about - and you won't see any more posts mentioning them. The program shows you how many posts of a given keyword were removed and how many were blocked in general. Also, it's easy to manage a block list and turn Faceblock off and on from the user interface.
(Please reload your Facebook page after install)
Have a great time! :)