If you want to know what the ACLU really supports, here are just a few FACTUAL examples (it's apparent that the ACLU is a left-wing interest group):

Removing nativity scenes from public property
Banning songs such as Silent Night from schools
Refusing to allow students to write about the Christian aspect of Christmas in school projects
Renaming Christmas break Winter break
Refusing to allow a city sponsored Christmas parade to be called a Christmas parade
Not allowing a Christmas tree in a public school
Renaming a Christmas tree displayed on public property a Holiday tree

In addition to their war on Christmas, the ACLU is all about:

Suing states to force them to legalize homosexual marriage
Forcing libraries to remove porn filters from their computers
Suing the Boy Scouts to force them to accept homosexuals as scout leaders
Helping to legalize child pornography (this is fucked up, and if you support this cause then I hope you have a son someday that gets relentlessly sodomized and gutted, then tell me how much you support this cause you sick fuck)
Legalizing live sex acts in bars in Oregon
Protecting the North American Man Boy Love Association, whose motto is "sex by eight or it is too late"
Censoring student led prayer at graduation
Removing "under God" from the Pledge of Allegiance
Removing "In God We Trust" on our currency