A Korean-American couple, their 3-year-old son — and two young sisters out shopping with their mom — were among those killed in Saturday’s Texas mall massacre. The Korean Consulate in Dallas confirmed that Cho Kyu Song, 37, Kang Shin Young, 35 and their youngest boy, James, were fatally shot by gunman Mauricio Garcia, 33, at the Allen Premium Outlets, The Dallas Morning News reported Monday. The couple’s other son, William, 6, was among the injured and is being treated at an area hospital, the consulate added. The now-orphaned boy — who celebrated his sixth birthday just last week — is...