Article Photos: More than 300 sites ring bells for MLK speech 2/26

This1965 photo provided by Maria Varela, shows striking farm workers as they are evicted from a abandoned Air Force Base in Greenville, Miss.  The photo was taken by Varela, then a member of SNCC, and was one of the few Latinos involved in the black civil rights movement. (AP Photo/Maria Varela, File)