It aired on May 20 , 2007 , alongside 24 Minutes . `` You Kent Always Say What You Want '' , formerly known as `` Kent State Massacre '' , is the twenty-second episode of The Simpsons eighteenth season , airing on May 20 , 2007 as part of the one-hour season finale , alongside the episode `` 24 Minutes '' ; a repeat took place on August 19 , 2007 .