1.   Sirens wailed, firefighters squirted water and the celebrants roared with joy when each teargas canister exploded.

2.   The boy was wide-eyed at a Los Angeles police officer who was laden with teargas canisters hanging on his chest straps.

3.   Riot police fired teargas canisters at the chanting marchers.

4.   On Monday, when a large crowd pushed back a contingent of security forces, police responded by firing teargas canisters.

5.   Police then fired teargas canisters, forcing the youths to flee and spreading panic in the capital.

6.   Police with teargas canisters on Monday fought a two-hour battle with the students who had set up road blocks along main roads in Freetown.

7.   Soldiers fired into the air and let off teargas canisters as they left under a hail of stones and bottles thrown by jeering Palestinian youths.