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Martin Luther King honored across U.S.

Mike Brown / The Commercial Appeal via AP

Marchers parade down Second Street during the annual Martin Luther King Day parade through downtown Memphis, Tenn. Monday, Jan. 16.

Takaaki Iwabu / The News & Observer via AP

Andrew Boudreaux, 10, leads the procession of the annual Martin Luther King Jr. Memorial March in Raleigh, N.C., Jan. 16.

Ben Earp / The Star via AP

Participants make their way along a sidewalk during the Martin Luther King Jr. Unity March in Shelby, N.C.

Nick de la Torre / /Houston Chronicle AP

Candi Flora, a historian wearing actual irons from the days of slavery, raises her arms during the 34th Annual "Original" Dr. Martin Luther King Birthday Parade and Celebration in Houston.

Eduardo Munoz / Reuters

Occupy Wall Street members march during a candlelight vigil to honor Rev. Martin Luther King, Jr. in New York.