David Lammy was interrupted by pro-Palestinian protesters as he delivered a keynote speech at the Fabian Society conference in London.The shadow foreign secretary dashed backstage as a heckler mounted the stage as he was addressing the conference.

David Lammy was interrupted by pro-Palestinian protesters as he delivered a keynote speech at the Fabian Society conference in London.The shadow foreign secretary dashed backstage as a heckler mounted the stage as he was addressing the conference.