(Amidst the violence, this seems to have barely received a mention at the G20, and the US Senate just killed it, but seems alive in Europe.)

Campaign video by Richard Curtis and Bill Nighy, about the Robin Hood Tax, a tiny tax on bank transactions that could raise hundreds of billions for public services and to tackle poverty and climate change at home and around the world. Add your own voice to the campaign at www.robinhoodtax.org.uk. Read more at www.brainpickings.org.