1. Police fired tear-gas canisters at the crowd of protesting students.

2. Police used tear-gas, electric batons and sticks to disperse the crowds, arresting 20.

3. The guards used to fire blasts of tear-gas into the cells while forcing their occupants to shout out their names.

4. Within minutes, police shot a dozen tear-gas canisters into the crowd[], gathered on an open field.

5. Tear-gas was used against the demonstrators, a few were arrested, and tourists were ordered to stay in their hotels.

6. Pakistani lawyer throws a tear-gas shell back towards the police in Lahore during a protest against the state of emergency declared by President Pervez Musharraf.

7. Tanzania's police, who rarely confront civil disobedience, have tear-gas sed rowdy opposition rallies.

8. Ordinary Tunisians credit the army protecting protesters against tear-gas wielding riot police and reestablishing order.

9. Two lorries crammed with riot policemen arrived and fired tear-gas canisters, rapidly dispersing the small crowd, which included news photographers.

10. Hundreds of bullets were let loose - followed by tear-gas and even mortar shells - as protesters were cut down without mercy.

11. Yes, he had been there in the thick of it, braving the rubber bullets and the tear-gas.

12. As I soaked in the hot pool, I felt the weeks of accumulated tear-gas residue seeping out of my pores.