Pixie...perhaps I can help shed some light on what all the "fuss is about"
It seems fairly obvious to me that if we compare the F word that Mitchell admits he used, and the Pleb word, that he denies using, there isn't much doubt that the F word is the worse of the two. It is now a common word that is heard in all walks of life but it is still classed as swearing, and quite rightly so. The Police should be able to go about their lawful business without being sworn at by the public. Mitchel apologised for the use of the F word and the Policeman on duty at the time accepted that apology. So, end of story perhaps.
But there is growing evidence that the Police set out to frame Mitchell and "fit him up" One serving Policeman has already been found out and has admitted that his statement was completely untrue. He has given a very confusing reason for his duplicity, which hasn't helped us to understand this affair any better.
It is this perceived attempt to frame an elected Member of Parliament that is the central issue, not what word was used and when. This is what needs to be sorted out, and we shouldn't get side-tracked by the use or not of the English language.