UNIVERSITY OF VIRGINIA — As second-year law student Grace Zipperer walked through the largest former detention center in Argentina, she was overwhelmed by the weight of its history. The walls may have once echoed with the cries of innocent civilians murdered by their own government, but the space was now filled by the chatter of tour guides answering sobering questions. ESMA was just one of many memorial sites Zipperer and seven other University of Virginia School of Law students visited during their seven-day trip to Argentina in January as part of the school’s Human Rights Study Project. Accompanied by UVA Law professor Camilo Sánchez the students conducted field research on human rights initiatives after Argentina’s Dirty War, which have included attempts to reunite families, truth commissions and groundbreaking civil rights laws and trials.