There have been few more pathetic displays of political impotence than the tweets sent by shadow cabinet members paying tribute to Michael Dugher after his sacking by Jeremy Corbyn. Dugher, a classic northern Labour fixer, had taken on the role of shadow cabinet shop steward. He spoke out against Momentum, the Corbynite pressure group, warned against a ‘revenge reshuffle’ and criticised negative briefings against the shadow cabinet from the leader’s office.