Celebrating the life of the Rev. Martin Luther King Jr.

The Professional Pallbearers from Boyd Funeral Home in Los Angeles perform at the Kingdom Day Parade on Martin Luther King Blvd. in Los Angeles.  (Mel Melcon / Los Angeles Times)

People visit the Martin Luther King Jr. Memorial on the holiday marking the civil rights leader’s birthday.  (Drew Angerer / Getty Images)

The Rev. Al Sharpton introduces Vice President Joe Biden at the National Action Network’s annual King Day Breakfast in Washington.   (Drew Angerer / Getty Images)

Elder Cal Murrell reacts to a speaker at the Martin Luther King Jr. Day commemorative service at Ebenezer Baptist Church in Atlanta.   (Jason Getz / Associated Press)

Gov. Nathan Deal speaks at the Martin Luther King Day service at Atlanta’s Ebenezer Baptist Church.  (Jason Getz / Associated Press)

Christine King Farris, the only surviving sibling of the Rev. Martin Luther King Jr., speaks at Ebenezer Baptist Church in Atlanta.  (Jason Getz / Associated Press)

New York Mayor Bill de Blasio speaks at a tribute to the Rev. Martin Luther King Jr. in Brooklyn. De Blasio told a packed audience at the Brooklyn Academy of Music that the “price of inequality has deepened,” saying economic inequality is closing doors for hard-working people in the city and around the U.S.  (Seth Wenig / Associated Press)

Robbie Thompson participates in a San Antonio march honoring the Rev. Martin Luther King Jr.  (Eric Gay / Associated Press)

Thousands participate in a march honoring the Rev. Martin Luther King Jr. in San Antonio.   (Eric Gay / Associated Press)

A young girl dances under a banner during a march in San Antonio honoring the Rev. Martin Luther King Jr.   (Eric Gay / Associated Press)

Letters spelling “We Believe” are carried by a group during a march in San Antonio honoring the Rev. Martin Luther King Jr.  (Eric Gay / Associated Press)

Horseback riders take part in a San Antonio march honoring the Rev. Martin Luther King Jr.  (Eric Gay / Associated Press)

A carnival dance group participates in a Miami march honoring the Rev. Martin Luther King Jr.  (J Pat Carter / Associated Press)

A Caribbean carnival group marches in Miami’s Martin Luther King Jr. Day parade.  (J Pat Carter / Associated Press)

The Martin Luther King Jr. Memorial in Washington, D.C.   (Drew Angerer / Getty Images)