It's none of the government's business what I spend my money on. If you go to a clinic specializing in mental health, cancer, abortion, or substance abuse, you

It's none of the government's business what I spend my money on. If you go to a clinic specializing in mental health, cancer, abortion, or substance abuse, your medical treatment is nobody's business but you and your doctor's. You ate at restaurants and bought gas at gas stations along a multi-state route leading to a city where there's a big protest about race relations, or income equality, or a convention where a controversial politician is going to be nominated. The government, or particular people inside it, might care -- and not in a way that's good for you or for the democratic process. Your aggregate purchase history reveals a great deal about your personality, relationships, political activism, physical/mental state, sexual activity and many other aspects of your life.