Slideshow posted in National/World | Monday, March 26, 2012
24 of 31:
Zoe Guy, 15, of Cleveland, holds a sign at a rally for Trayvon Martin, Saturday, March 24, 2012, in Washington. Martin, an unarmed young black teen, was fatally shot by a volunteer neighborhood watchman.
(AP Photo/ Haraz N. Ghanbari)