While certainly a strong negative, I don't think profiling can be considered a false positive. If a false negative is a terrorist getting onto a plane, wouldn't a false positive be a non-terrorist being blocked from getting on a plane (or removed) because the FA/pilot/FAA/DHS/FBI/twitchy passenger two rows back thought they were a terrorist?

Making everyone darker that a given paint swatch go through additional screening is abhorrent, but I don't think it's a false positive.