No surprise that the architects of the policy sanctimoniously defend it and its fallout.
Even less of a surprise that someone as corrupt and unfit for office as Khan would make comments like that, if that was a direct quote.
http://order-order.com/2011/02/05/the-wrath-of-khan/
What he said - accusing people making that kind of comment as writing extremist propaganda puts into very clear focus how extreme the views are in the other direction. Socially and politically a remarkably stupid move, but just what Ed deserves for appointing an unsuitable sycophant of his to such an office.