That's what I asked. But of course the 1964 Civil Rights Act, as well as the Supreme Court's Bob Jones decision, shows that sometimes it doesn't matter whether something is public or private.
Point well made -- and a socialist touchstone. In fact, it was what Barry Commoner's quixotic 1980 presidential campaign was all about, with all the Fabians in the Democratic movement hissing at Commoner to shut the hell up, he was giving it all away.