Historians reflect on MLK's legacy as tensions rise in U.S. A week after violence at the U.S. Capitol people say we have to work harder to unite again. Social division, distancing marks 2021 MLK Day and last updated 2021-01-18 18:56:50-05 TALLAHASSEE, Fla. (WTXL) â As the world celebrates Martin Luther King Jr. people are focused on how far we've come and how far we have to go. 53-years after Martin Luther King Jr's death, people who study black history say there has been progress. But with tensions high both racially and politically, they say we have to work harder to unite again.