Texas mall shooting leaves family devastated and raises questions about gun violence and racism.

The victims of the shooting at a mall near Dallas include two elementary school-age sisters, a couple and their 3-year-old son, a young engineer, and a security guard. The victims represent a multicultural cross-section of the area’s increasingly diverse suburbs. Authorities are still trying to piece together what led to the attack, which ended when the suspected gunman was fatally shot by police. Federal officials are looking into whether the gunman expressed an interest in white supremacist ideology.