Participants walk with arms linked up Dexter Avenue in Montgomery, Ala., during a Martin Luther King march on Monday, Jan. 21, 2013. (AP Photo/AL.com, Julie Bennett)

 

              Participants walk with arms linked up Dexter Avenue in Montgomery, Ala., during a Martin Luther King march on  Monday, Jan. 21, 2013. (AP Photo/AL.com, Julie Bennett)
Participants walk with arms linked up Dexter Avenue in Montgomery, Ala., during a Martin Luther King march on Monday, Jan. 21, 2013. (AP Photo/AL.com, Julie Bennett)