Why Can't the White Santa Companies Say No Black Kids?

Justice Alito asked the lawyer for Colorado this question. He said, so if there's a black Santa at the other end of the mall, and he doesn't want to have his picture taken with a child who's dressed up in a Ku Klux Klan outfit, does that black Santa have to do that? Very weird. For lots of reasons, mainly though public accommodations laws protect classes of people because they've historically faced discrimination. The Klan is not one of those groups.