1929-1968 1963 20thcentury addresses africanamericancivilrightsworkers africanamericans africanamericanstudies american americanspeeches baptists biography civilrights civilrightsdemonstrations civilrightsmovements clergy ethnicstudies history historyandcriticism ihaveadream(king juvenileliterature king marchonwashingtonforjobsandfreedom martinluther oratoryking pictorialworks picturebooksforchildren politicalfreedom politicalscience politicsandgovernment security socialconditions socialscience speeches theory unitedstates washington