The demonstrators had set fire to piles of tires and buses, rolling the vehicles towards lines of soldiers holding riot shields and machine guns.

VOA: standard.2009.04.13

(Sound) Twenty years ago, thousands of students braved riot police in Prague, demanding an end to decades of communist rule in what was then Czechoslovakia.

VOA: standard.2009.11.17

Police adopted similar tactics early Sunday in Lahore, surrounding the home of opposition leader Nawaz Sharif and deploying scores of officers in riot gear throughout the city.

VOA: standard.2009.03.15

But before the censorship, dozens of homemade videos were able to be posted to the Facebook website showing demonstrators being beaten by riot police and shouting "down with the dictator."

VOA: standard.2009.06.14

Israel says its troops only used their pistols after they were attacked, and released a video showing soldiers in riot gear descending from a helicopter into a crowd of men with sticks and clubs.

VOA: standard.2010.06.03