Possible Clues:

• Org. that defends the Bill of Rights
• 'Because Freedom Can't Protect Itself' org.
• Women's Rights Project org
• ". . . card-carrying member of the ___"
• Org. that defends individual rights
• Rts. advocate
• Bill of Rights defender
• Org. that submits many amicus curiae briefs
• Voting rights org
• Org. involved with the Scopes trial