It's possible that the invocation of "civil rights" is going to make some people roll their eyes at what sounds like a race-baiting headline. But this was one of the best arguments I've read about being cautious in the era of big data. As always, the issue is not that data itself is bad, but what small-minded people who have control of the data wil do with it. And the OP makes a strong case that minorities (whether racial or of any other kind) will be the first to be screwed.