As Christine Lagarde pointed out, one of the greatest threats to global stability is the ever widening income gap between rich and poor. Oxfam highlighted the issue in dramatic terms at Davos with the bus load of billionaires having the same wealth as 50% of the world's population. Is voluntary philanthropy the silver bullet to the growing income inequality crisis or is philanthropy letting the state off the hook? Hear from a panel who each, in their way, are on the frontline of philanthropy . Recorded live at Editorial Intelligence’s annual ideas festival Names Not Numbers.