Federal and state offices, banks, as well as postal and trash services will be closed or suspended Monday. Here’s what else you should know.

— Martin Luther King Jr.‘s “I Have a Dream” speech

It was first proposed four days after King's 1968 assassination outside a Memphis motel. It took 15 years until it became a federal holiday.

The U.S. is set to mark Martin Luther King Jr. Day, the federal holiday set aside to honor the life of the civil rights icon. But in two states, Monday is also Robert E. Lee Day in honor of the Confederate general.

American activist who put his life on the line to bring equality and justice to all during the Civil Rights movement died, but those who honor the reformation Dr. Martin Luther King Jr. created continue to remember his name.

“With malice toward none, with charity for all, with firmness in the right, as God gives us to see the right, let us strive on to finish the work we are in, to bind up the nation’s wounds.” -- Abraham Lincoln, March 4, 1865.