Org. with an amicus brief in Brown v. Board of Education

• Group that fought the Patriot Act: Abbr
• Organization concerned with freedom of speech: Abbr
• Recent NSA suer
• Org. with part of a prominent statue in its logo
• Legal rights gp
• Frequent plaintiff
• Org. involved in the Scopes trial
• Anti-censorship gp
• "What Happens in Arizona, Stops in Arizona" org

Wiktionary Word definitions in Wiktionary
n. (initialism of American civil Civil liberty Liberties union Union English)