Channel 4 has been to the forefront. First it was surrounded in controversy as it defied calls to pull a programme featuring graphic images of the car crash which killed Princess Diana in Paris in 1997, despite this being requested by her sons. Then more trouble erupted as, for the second time, the Big Brother show broadcast racist language from one of the housemates. This time the Channel 4 chiefs took swift action and Emily Parr was dismissed from the programme.