Originally Posted by Willie Sutton
You have no protected "Right" to free speech when dealing with anything other than the United States Government. . . .
You don't have any RIGHTS at all if it's not the Government infringing on them.
Close, but not quite. The First Amendment rights are protected from infringement by State governments, as well as the United States (federal) government.
As against an employer, a person may have rights conferred by statute.
Whatever we may think of management's decisions with respect to this DJ, it's not a First Amendment issue.