VATICAN CITY — Pope Benedict XVI insisted on Saturday that all of society's institutions and not just the Catholic church must be held to "exacting" standards in their response to sex abuse of children, and defended the church's efforts to confront the problem.

Benedict acknowledged in remarks to visiting U.S. bishops during an audience at the Vatican that pedophilia was a "scourge" for society, and that decades of scandals over clergy abusing children had left Catholics in the United States bewildered.

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