Gabriel Zucman's radical plan to tax billionaires

Hamas has announced the dissolution of its governing body in Gaza, in an effort, it says, to advance Donald Trump's peace plan. But Israel insists it's all a ruse to avoid giving us its weapons.The billionaire class is booming and most of them are paying less tax than you or I, sometimes close to zero. In his new book We Need To Tax Billionaires acclaimed French economist Gabriel Zucman argues this legalised swindle is the greatest threat to democracy in the 21st century.  She first picked up the violin as a three year old, more than four decades on virtuoso Leila Josefowicz still finds her chosen instrument endlessly fascinating.