When a plane literally flies into the building you are in, you have the right to say whatever expletives you like - and no impressionable young kids should be watching that live anyway.
Anyone old enough to watch a documentary about 9/11 has already heard the F-word in daily conversation.
Why don't we cut through all the crap and just say, we want total freedom to see anything on TV we want to see, without any restrictions, extra payments, or ratings. That's what these people who advocate vulgar profanity to be aired really want. No censorship of anything!!