'The announcement has sparked controversy among students and anti-fascist activists, according to The Guardian.' Said 'anti-fascist activists' apparently being distinguishable by their willingness to impose limits on free speech, I take it. Irving pretty much manages to discredit himself. Go ahead and try reading some of the books he can no longer get distributed except on the internet: they're ridiculous. Now successfully keep me from reading them: I gotta wonder if there's something there...
U.S. to defend Syrian rebels with airpower, including from Assad (Reuters)
from the article: Oxford Union reportedly invited Holocaust denier Irving to speak