Back and Forth: A protester throws back a tear gas canister fired by riot police in Bangkok as Thailand's political crisis deepens, raising fears of prolonged instability in one of Southeast Asia's biggest economies. (ASSOCIATED PRESS PHOTOGRAPHS)

Photo by: Wason Wanichakorn

Back and Forth: A protester throws back a tear gas canister fired by riot police in Bangkok as Thailand's political crisis deepens, raising fears of prolonged instability in one of Southeast Asia's biggest economies. (ASSOCIATED PRESS PHOTOGRAPHS)