Marpheen Chann, 31, is a Portland activist and the author of a biography called “Moon in Full: A Modern Day Coming-of-Age Story.” He works as the community impact manager of the Good Shepherd Food Bank and serves on a number of local boards and organizations, including the Portland Planning Board. His mother came to Maine from Cambodia as a refugee, and he is the president of Khmer Maine, a grassroots organization serving the state’s Cambodian community.