Even in a smaller city such as St. Louis, you're likely to find yourself a handful of zeros from the top: Under the Gateway Arch, the big money belongs to Enterprise Rent-A-Car's Jack Taylor and his family. They're worth an estimated $9 billion.

Sometimes, though, the justices themselves manage to let people know something big is coming.

One demonstrator opposing the law wore a striped prison costume and held a sign, "Obama Care is Putting the US Tax Payer in Debtors Prison."

"If vigilante justice becomes the norm, will visitors feel comfortable coming to our state?" she said.