Hong Kong police deployed water cannons for the first time Sunday evening, after violent protesters set up barriers and roadblocks on streets throughout the Tsuen Wan District. Demonstrators began retreating after police issued a warning that they were going to use water cannons to disperse the unruly crowd. (Global Times)

Hong Kong police deployed water cannons for the first time Sunday evening, after violent protesters set up barriers and roadblocks on streets throughout the Tsuen Wan District. Demonstrators began retreating after police issued a warning that they were going to use water cannons to disperse the unruly crowd. (Global Times)

Hong Kong police deployed water cannons for the first time Sunday evening, after violent protesters set up barriers and roadblocks on streets throughout the Tsuen Wan District. Demonstrators began retreating after police issued a warning that they were going to use water cannons to disperse the unruly crowd. (Global Times)

Normally used to fight fires, clean large vehicles, and for riot control efforts, water cannons have the ability to shoot high-velocity streams of water over great distances. (Global Times)

Normally used to fight fires, clean large vehicles, and for riot control efforts, water cannons have the ability to shoot high-velocity streams of water over great distances. (Global Times)