The JVL quote is spot on. Berger et al are the true anti-semites.
'The flood of exaggerated claims of antisemitism make it harder to deal with any real instances of antisemitism. The credibility of well-founded allegations is undermined by the less credible ones and real perpetrators are more likely not to be held to account. Crying wolf is dangerous when there are real wolves around the corner. This was the reality that Chris Williamson was drawing attention to.'