Tax and child poverty
For those skeptics wondering about how child poverty is measured in this graph: follow the link we've provided. It's defined in this report as "Share of children 17 years and under living in households with equivalized disposable income less than 50% of median income; Society at a Glance: OECD Social Indicators, 2005, p.57." This is how the United Nations defines poverty.
For those doubting the US poverty rate identified in this graph, take a look here. And if you doubt that, follow the links to the source materials. And even if you really want to doubt those (why would you?) - well, the precise definition of poverty that you use doesn't really matter in this graph - for it's the trend: the relationship between the component parts, that is the important (and striking) thing here. It tells a simple story: the lower your taxes as a share of GDP, the more child poverty.
See more here. Note that this graph refers to relative poverty within countries (not between them.) Does inequality matter? Yes it does: around the world, it is one of the great political issues of all time.
And one last thing: read the full report. It contains much else that might surprise you.