"Hee Haw! Hee Haw!" - Fear Factor
Fear Factor is obviously a show that is going to be gross, just look at the name. The contestants performed gross challenges to win money. This episode took it too far. The contestants were forced to choose between drinking two different liquids from a donkey. It was so disgusting that fans of the show complained if you can believe it.
"The High Ground" - Star Trek: The Next Generation
This episode of Star Trek had the characters visit the planet of Rutia IV in which "a generation of peace has ended with terrorist attacks by Ansata separatists who are demanding autonomy and self-determination for their homeland on the western continent." Although this is obviously a fake world that was built by the writers, many folks noticed the similarities between the episode and the Irish Troubles, or better known as the Northern Ireland Conflict. This sparked tensions and was subsequently banned in the UK and Ireland.