hundreds of demonstrators began on Sunday afternoon to meet in the centre of hong Kong to protest against the project of Beijing to impose its semi-autonomous region, a controversial law on security, according to journalists of Agence France-Presse.

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They chanted slogans of the movement's pro-democracy while the riot police, deployed in strength, warned of the illegal nature of their gathering in the heart of Causeway Bay, one of the city most merchants of the island of hong Kong. Police then fired tear gas to disperse hundreds of protesters. At least one protester was arrested.