On the face it it was just another arrest of someone trying to break into a house in Boston. But it wasn't an "ordinary" arrest at all, as events have clearly shown. No less importantly, what happened here has highlighted, not for the first time, racial profiling in the USA. The Independent reports: "Imagine, if you will, a professor at Cambridge, one of the most learned and best known scholars of his generation, being arrested by police after forcing the door of his house when the front lock jammed. Impossible, you will say. But that is what happened. Except the Cambridge in question is not in East Anglia, but a town in Massachusetts that is home to the British university's American equivalent, Harvard, and that Henry Louis 'Skip' Gates, the professor who lived at this most pleasant abode, is black. Every now and then, a small incident crystalises a great issue, and the Gates affair is one of them. The issue is racial profiling, the pernicious habit