A single voice of integrity and searching can be a window into a whole world. Layli Long Soldier is a writer, a mother, a citizen of the U.S. and of the Oglala Lakota Nation. Her book of poetry, “WHEREAS,” is an innovative response to the congressional resolution of “Apology to Native Peoples,” which was tucked inside the 2010 Department of Defense Appropriations Act. She offers entry points for us all — to events that are not merely about the past, and to the freedom real apologies might bring.