[asfarley]

From a careful reading of the quoted portions of the manifesto, it seems like he was not arguing in favor of antisemitism; rather, he was describing his early prejudices which presumably have been rethought.

It seems like the headline is trying to trick the reader into thinking the opposite.

[lupire]

I think you misunderstood the headline because it's describing an unusual behavior. He wrote a manifesto (meh) about antisemitism.