Cars, clothes and food cost money.But why should the privacy protected by the Fourth Amendment?The 7th U.S. Circuit Court of Appeals recently confronted this question in U.S. v Lonnie Whitaker (Nos. 14-3290 and 14-3506, decided April 12, 2016). And it responded by making Fourth Amendment privacy a little more affordable to those of us in the bottom 99 percent of the income scale.Acting on a tip that drugs were being sold from an apartment, Madison, Wis., police brought Hunter, a drug-sniffing dog, to the building where the …