Jonathan Ross and Russell Brand - along with many other "stars" of the BBC - regularly use offensive language, make derogatory remarks about people and generally behave in a rude and boorish manner on air, often live and usually quite deliberately. They rarely get sacked or reprimanded for doing so and if they do it is only after a long campaign and thousands of complaints. Even then the BBC goes to great lengths to defend its editorial policy of being "edgy".
Carole Thatcher makes one unguarded comment off air which a BBC presenter takes offence to and which none of us would know about unless the BBC decided to announce it (as they did) and it's curtains for Ms Thatcher faster than you can say "politically incorrect".
Can you spot the difference?