The MP for Tottenham David Lammy has said parents in his constituency were confused about the law on smacking and "live in fear of social services turning up on their doorstep".
And he said lots of middle class parents "have never met social services in their lives and can't understand that fear".
Cindy Butts, adviser on the Metropolitan Police's Operation Trident, and Sunny Hundal, Guardian writer and editor of left wing blog Liberal Conspiracy, discuss whether smacking is ever justified.
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