The Booker Prize winner said those who claimed judging Muslims was "de facto" racism were playing a "poisonous argument".
McEwan, 61, the best-selling author of novels including Amsterdam, Atonement and Saturday, thought many in the left wrongly took this position because they had an anti-Americanism shared with Islamists.
In an interview with today's Telegraph Magazine, McEwan said: "Chunks of left-of-centre opinion have tried to close down the debate by saying that if you were to criticise Islam as a thought system you are a de facto racist. That is a poisonous argument. [telegraph.co.uk] Read more