SCHENECTADY — The 15-year-old boy killed in a shooting at a house party on Congress Street Saturday night was the brother of Medina Knowles, the city’s last known teen victim of gun violence.

SCHENECTADY — The 15-year-old boy killed in a shooting at a house party on Congress Street Saturday night was the brother of Medina Knowles, the city’s last known teen victim of gun violence ...