Thirty years after writing Bowling Alone, the famous essay in which he diagnosed a dangerous crisis of social cohesion in the United States, Robert Putnam has a right to feel vindicated. In a lecture this spring, Prof Putnam, now 84, warned his audience that, amid levels of polarisation and distrust higher than at any time since the civil war, the US was “in danger of going to hell in a handcart”.

Britain is still, thankfully, a long way from the poisonous toxicity of Trump-era America, notwithstanding the ominous rise of Reform and Nigel Farage. But research published this week by the More in Common polling group paints a worrying portrait of communities in which there is a widespread sense of social disconnection, high levels of distrust among the young and a felt loss of shared spaces and rituals.

Alarmed by the progress of Reform in “red wall” seats that it won back in the last election, Labour has chosen primarily to........

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