You could get arrested if the mix of stuff you buy accidentally matches a list of ingredients on a watch list. Sometimes it doesn't even take a mix but just a

You could get arrested if the mix of stuff you buy accidentally matches a list of ingredients on a watch list. Sometimes it doesn't even take a mix but just a single ingredient: http://consumerist.com/2009/09/grandmother-arrested-for-buying-cold-medicine-twice-in-one-week.html http://consumerist.com/2009/09/grandmother-arrested-for-buyi... You argument is the same as the "I've got nothing to hide, why should I be worried" argument in another dress. The flip side of that coin is that your imagination should not be the deciding factor in whether or not you care about your privacy. What bad things you can or can not envision today isn't all that important, it is simply that an expectation of privacy is something that should be yours without having to ask for it.