Possible Clues:

• She refused to ride in the back of the bus
• First woman to lie in honor in the U.S. Capitol
• Civil rights icon (1913-2005)
• Name in 1955 news
• Civil rights movement figure
• Historic passenger
• Fool in cry of 14 whose 19 across helped forward 21 7's 25
• Onetime boycott instigator
• Civil rights pioneer
• Activist known as 'the mother of the freedom movement'