A mural of Martin Luther King Jr., featuring a quote from his 1964 book "Why We Can't Wait," is seen in Cambridge's "Graffiti Alley," an ever-changing public art installation. Spotlight: Jan 18, 2021 MIT is closed today to honor the memory and work of Martin Luther King Jr. Multiple other programs at the Institute also commemorate and advance Dr. King’s legacy. Jan 18, 2021 Share: Twitter Facebook