A group of New York City atheists is demanding that the city remove a street sign honoring seven firefighters killed in the Sept. 11, 2001, terrorist attacks because they say the sign violates the separation of church and state. The street, “Seven in Heaven Way,” was officially dedicated last weekend in Brooklyn outside the firehouse where the firefighters once served. The ceremony was attended by dozens of firefighters, city leaders and widows of the fallen men. “There should be no signage or displays of religious nature in the public domain,” said Ken Bronstein, president of New York City Atheists. “It’s...