I cried. Now, I admit I cry easily. I tear up when friends tell me they are going to have a baby. I welled up when I saw Ringo Starr join Paul McCartney on stage.

But this time it was different. When I watched Luciana Berger deliver her speech resigning from the Labour Party I cried because of its integrity and bravery and grace. And I cried because in my entire adult life what happened yesterday is the one of the lowest, most dispiriting political moments for British Jews. I cried because I despair at what has happened. I cried because I don’t think it is over.

There is so much to say about the creation of a new political grouping. So much about its