Historian and supposed authority on Islam, David Starkey, managed to tickle the depths of racial stereotyping on Question Time by calling Mehdi Hasan 'Ahmed'.
While speaking on the topic of freedom of speech in the wake of the Charlie Hebdo shootings, Starkey gave an abridged account of why he thinks modern Islam is "backward".
Unfortunately he appeared to draw his terms of address from the 1930s and addressed the political director of the Huffington Post UK like this...
Oh dear David.
Needless to say Twitter was all over it.