Martin Luther King Jr. Day is a federal holiday, so some businesses will be closed in Massachusetts. Here's what you need to know.

Dr. Martin Luther King Jr., who dedicated his life to speaking out against injustice, poverty, war and inequality. King advocated using nonviolent resistance to bring an end to racial segregation in the United States,

Originally released on home video, Dr. Martin Luther King Jr.: A Historical Perspective follows a more traditional approach to documentary filmmaking. Narrated by The Transformers voice actor Arthur Burghardt, we see some never-before-scene footage of Dr. King and elements of his life that weren’t covered in the previous documentaries.