Should young girls in Arab countries - and around the world - be trained how to defend themselves against unwanted physical attention?

This personal view comes from Joumana Haddad, Lebanese author of Superman is an Arab. She argues this simple change will fundamentally shift how men and women think.

This is part of a series of authored talks by radical thinkers, from BBC World Hacks - a new BBC World Service programme focussed on solutions, or hacks, to global problems.

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