Why Jeremy Corbyn can't implement the full IHRA definition of Antisemitism?

'The Mail on Sunday has unearthed a previously unpublicised video showing him speaking at a pro- Palestine meeting in 2012 which included the reading of a poem that said the 'victims of Auschwitz' were now the 'torturers'.

Jewish campaigners said 'outrageous' verses of the poem read out at the rally breached part of the internationally recognised definition of anti-Semitism – the key section that Labour controversially left out of its watered-down version.'

More here http://www.dailymail.co.uk/news/article-6027151/Corbyn-allegedly-called-Dame-Louise-Ellman-Honourable-Member-Tel-Aviv.html but obviously not on the Labour Party's propaganda arm, the BBC.

I wonder how many BBC 'journalists' would also fall foul of the IHRA definition of anti-Semitism?