It pains me to say it , but I believe that once some misguided person had decided to give Griffin the publicity and credibility of being on question time, the panel should have avoided the temptation to "gang up on him". That could be seen in some quarters as bullying. The last thing we needed was for him to become some sort of victim.
He should have been made to answer the usual questions about the recession, and other current affairs.I'm sure that would have shown him up as someone with tunnel vision, who has nothing of value to say, and no idea what to do about unemployment,crime, etc - issues which greatly trouble the people who voted for him .That would have been the only value in upholding the right to free speech.(Although why he has this right when he regularly commits the crime of inciting racial hatred I do not know.)