Chinese authorities had to use tear gas to disperse thousands of protesters during an anti-Japanese demonstration in the southern city of Shenzhen on Sunday. Protesters took to the streets in several Chinese cities including Shenzhen and Guangzhou, where crowds turned violent, clashing with the police.  Water cannons were also used to stop protesters from trying to break into government buildings, and at least a dozen people were arrested, according to the South China Morning Post.
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