Inside the visitor center at the Martin Luther King Jr. National Historic Site at 450 Auburn Ave. in 2017. JOHN SPINK /JSPINK@AJC.COM Whether it’s a day of volunteering or quiet reflection, Atlantans honor King. By Mary Welch for the AJC January 7, 2022 -- “The Martin Luther King holiday is not a day to ‘take off’ but to ‘take on’,” says Jay Cranman, president and CEO of Hands On Atlanta. “Dr. King believed in serving and uplifting the community, and a project day of service certainly honors...