I received my PhD in anthropology from the University of Massachusetts-Amherst in 1987. My early work inquired into social change in ancient Zuni society of west-central New Mexico, where I directed DU archaeological field schools throughout the 1990s. Other publications focused on the great Native American cultural centers at Cahokia and Chaco Canyon. Between 1997 and 2004 I co-directed the Colorado Coal Field War Archaeological Project, dedicated to better understanding events related to the 1913-14 Colorado Coal Field strike including the infamous Ludlow Massacre. This research included significant public outreach and K-12 education initiatives and culminated, in 2009, with the designation of the Ludlow Massacre site as a National Historical Landmark. I am the author of The Archaeology of Collective Action, and co-author of Denver: An Archaeological History. In 2013, I convened the John Evans Study Committee that investigated the university founder’s culpability for events that culminated in the massacre of peacefully camped Native Americans at Sand Creek in 1864. I am currently researching and writing about issues facing the contemporary city from a cross-cultural and deep-time perspective. I write and edit a blog called Intercultural Urbanism, and I am a featured essayist for the public interest urban planning website Planetizen.