Free Speech and Antisemitism
It is wrong and a violation of individual rights to arrest people for the ideas they hold. This is the case regardless of the morality or immorality of the ideas involved. Even the publication or broadcast of ideas as viciously evil as holocaust denial deserve to have the protection the law. That's why I do not agree with the this verdict. David Irving may be scum, but being scum is not a crime and should not result in imprisonment. Irving deserves to be socially shunned.
Speaking of antisemitism, for an interesting review of the history of antisemitism, one could do a lot worse than read this interesting essay by Middle East Historian Bernad Lewis. It includes a good review of Arab attitudes before and after the creation of the State of Israel.