Douglas Murray’s ‘The Madness of Crowds’ promises to exorcise the spectre of woke, but ultimately leaves many issues untouched. — Published in the early months of the Johnson government, ‘The Madness of Crowds’ reads now like a survey of lines of trenches and barbed wire on the eve of the culture war. Its author, Douglas Murray, is conscious of this. He describes the book as performing the same function as…