One of the most astonishing events I’ve taken part in as an MP elected nearly a decade ago was the demonstration at Parliament Square organised by the Jewish community last March. Jewish people from across London and beyond travelled to Westminster to protest against, not the BNP or National Action, but antisemitism in the Labour Party.

How incredible that a party founded on the principles of equality should become imbued with the oldest hatred — that directed towards Jews. How unthinkable that a minority community should feel compelled to meet under the banner “enough is enough” because of the prejudice and bigotry we experience from those purporting to be Labour supporters and members.

It should have been a watershed. It should have been the moment