It’s not often you hear people asking to pay more tax. But that’s exactly what hundreds of superwealthy people have been calling for lately. In Austria, one multimillionaire has decided to give away almost all of her inheritance in protest at the Austrian government’s failure to tax her. And earlier this month, more than 250 of the self-proclaimed super-rich signed an open letter calling on world leaders to tax them more. The World’s Europe correspondent Orla Barry reports.