In civilized societies today ... clitoris envy, or womb envy, takes subtle forms. Man's constant need to disparage woman, to humble her, to deny her equal rights, and to belittle her achievements all are expressions of his innate envy and fear.
I think if you look at the general public, if you can catch - I mean, yes, there's always risk to privacy. Because when you look at data going; you can't know "oh, that's a terrorist" and "that's not a terrorist", you probably have to look at more people to find who is a potential terrorist. But I think that you cannot belittle the need to use all possible means to avoid if only one terrorist attack.