Can a "Human rights event" be "religion free"?

The headline for this L.A. Times story is, "District Scambles to Ensure Human Rights Event is Religion Free."  (Apparently, the group sponsoring the event is tied to the "Church of Scientology.")  My first thought, though, was "Is it possible for a 'human rights' event really to be 'religion free'?"  Cf., e.g., Michael Perry, "The Morality of Human Rights:  A Nonreligious Ground?"