"12 Days of Religious Liberty."

The ACLU highlights its work in the field of religious freedom, in a series of blog posts.

Day 1: ACLU Defends Church's Right to Run "Anti-Santa" Ads in Boston Subways

... In 2002, the ACLU of Massachusetts filed a First Amendment lawsuit against the Massachusetts Bay Transportation Authority (MBTA) for removing subway ads promoting the views of a local church and refusing to sell additional advertising space to the church. One of the controversial ads, paid for by The Church of the Good News, said that early Christians did not celebrate Christmas or "believe in lies about Santa Claus, flying reindeer, elves and drunken parties."

The ACLU argued that the MBTA cannot refuse advertising space to groups it disagrees with.