Since appearing as a series of shorts on the long-forgotten Tracey Ullman Show, and then debuting in 1989, The Simpsons has gone on to become a social and cultural phenomenon. With an incredible 25 seasons containing 533 episodes under its belt, the Matt Groening-created animation is the longest-running American sitcom, animated program and primetime, scripted television series in history. Featuring dysfunctional family Homer, Marge, Bart, Lisa and Maggie, as well as the hundreds of other characters found throughout Springfield, The Simpsons has even spawned video games, comic books and a feature-length film. There's little questioning its popularity - winner of 27 Primetime Emmy Awards, 30 Annie Awards and a Peabody Award, The Simpsons continues to capture our attention almost a quarter of a century after its debut. Yet for all its successes, the show is not without its fair share of criticisms and controversies; the argument for its declining quality over the years aside. Whether its enraging a tourism board or evoking the wraith of a former US President, The Simpsons has been no stranger to negative press during its long run. Banned in China and restricted in Venezuela, one of America's most well-known families have polarised opinion as much as they have charmed their legions of fans down the years. And here, we take a look at the 10 Most Controversial Simpsons Moments Ever...