What’s behind charges that American public broadcasting is biased towards the left? “Indeed, poll after poll shows that Americans consider PBS to be one of their most trusted and valued institutions… A poll of 6,000 Americans last month revealed 66 per cent believe PBS has no bias, while 21 per cent say it leans to the left and 13 per cent see a tilt to the right. So where do all the charges of liberal bias come from?”