Sotomayor, J., dissenting
such as the federal Civil Rights Act, list establishments that qualify, but these establishments are ones open to the public generally. See, e.g., 42 U. S. C. §2000a(b) (hotels, restaurants, gas stations, movie theaters, concert halls, sports arenas, stadiums). A public accommodations law does not force anyone to start a business, or to hold out the business’s goods or services to the public at large. The law also does not compel any business to sell any particular good or service. But if a business chooses to profit from the public market, which is established and maintained by the state, the state may require the business to abide by a legal norm of nondiscrimination. In particular, the state may ensure that groups historically marked for second-class status are not denied goods or services on equal terms.
The concept of a public accommodation thus embodies a simple, but powerful, social contract: A business that chooses to sell to the public assumes a duty to serve the public without unjust discrimination. J. Singer, No Right To Exclude: Public Accommodations and Private Property, 90 Nw. U. L. Rev. 1283, 1298 (1996) (Singer).
B
The legal duty of a business open to the public to serve the public without unjust discrimination is deeply rooted in our history. The true power of this principle, however, lies in its capacity to evolve, as society comes to understand more forms of unjust discrimination and, hence, to include more persons as full and equal members of “the public.”
1
“At common law, innkeepers, smiths, and others who ‘made profession of a public employment,’ were prohibited from refusing, without good reason, to serve a customer.” Hurley v. Irish-American Gay, Lesbian and Bisexual Group of Boston, Inc., 515 U. S. 557, 571 (1995) (quoting Lane v. Cotton, 12 Mod. 472, 485, 88 Eng. Rep. 1458, 1465 (K. B.
