Today in History By The Associated Press Dozens shot, 6 dead following Chicago weekend violence The Associated Press Active-shooter drills help schools prepare for the worst By JENNIFER C. KERR After San Bernardino, counselor faces other side of crisis By CHRISTINE ARMARIO Animal rights activists disrupt Sanders rally in Oakland The Associated Press Russia highlights ties with China ahead of Putin's trip The Associated Press Gulf economic slowdown sees foreign workers trapped by debts By JON GAMBRELL Casino tests novel approach to preventing gambling addiction By PHILIP MARCELO After Gamergate, female video game developers on the rise By Natalie Pompilio Libya: France announces $500 million upgrade for oil site The Associated Press