Nurtured from an early age by her activist parents, 19-year-old Emily Silverstein was acutely aware of the troubles of the world and worked to find solutions to issues such as homelessness and women's rights. A sophomore honors student at Gettysburg College in Pennsylvania, she was poised to take the world by storm, her family said. But on Thursday morning, Silverstein was found dead in an off-campus apartment. She had been strangled and stabbed to death, allegedly by a former boyfriend, authorities said. ... From her upbringing, Silverstein was destined to become an activist, Kelly said. Her relatives were anti-war protesters...