Should male passengers be allowed to sit next to unaccompanied children?

Article here. Excerpt:

'Washington (CNN) -- An Australian airline's policy prohibiting male passengers from sitting next to kids traveling alone has fueled a social media firestorm and caused the company to review the rule.
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Virgin Australia's policy to prevent men from sitting next to the unaccompanied minors has supporters, including John Shehan of the National Center for Missing and Exploited Children in the United States.
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"We're trying to prevent child victimization," he said. "We know the overwhelming majority of sex offenders are male, so by removing that situation you're lowering the risk."

Australian airline Qantas also has come under fire for a similar policy prohibiting men from sitting next to unaccompanied minors. The airline declined to comment.'