It’s nearly dawn in Bolivia, and a guerilla operation is underway in the dimly lit streets of La Paz. Rather than grenades and guns, however, these warriors are armed with research and sketchbooks — implements of choice for American students, artists and educators on a humanitarian mission. They call their work “guerilla altruism,” an idea conceived by Tyler School of Art Assistant Professor of Architecture Scott Shall that challenges young humanitarians to create unorthodox solutions to global problems. Influenced by the ideas of the Argentine guerilla leader Che Guevara and a diverse list of modern revolutionaries, Shall challenges his students to use the improvisational techniques of guerilla warfare and the humanitarian spirit of altruism to design strategies for improving the lives of underserved populations.