Editor's note: This infographic is one of the clearest and most meticulously sourced illustrations we've seen for explaining the current conflict over the Dakota Access Pipeline in the context of the our country's long and shameful treatment of Native Americans and outright theft of their property. Thanks to cartographer Molly Roy for releasing it under a Creative Commons license and for making available digital files suitable for reproduction, and thanks to Commons reader Shannon Herrick for sharing it on Facebook.