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A plainclothes police officer reacts against journalists during a protest by anti-government demonstrators in central Istanbul May 31, 2014. Turkish police on Saturday used teargas in central Istanbul to disperse protesters seeking to mark the one-year anniversary of the start of the biggest anti-government demonstrations in decades. Several hundred people gathered on streets leading to Taksim Square, shouting for the government's resignation, when police fired teargas at the crowd, which quickly scattered. REUTERS/Murad Sezer

A CNN reporter was arrested on live TV Saturday while filming a segment on a rash of protests marking the one-year anniversary of the Taksim Square protests.

Ivan Watson is seen reporting in front of a line of police when a group of unidentified men surround him and ask for his passport and press card. Just as the video ends, Watson can be heard saying, “We’re being detained right now,” and then, “I’m being kicked.”

Watson says he and his team were released shortly after being detained.

25,000 Turkish police officers were deployed to disperse protesters seeking to demonstrate in commemoration of last year’s protest. Tear gas was used and photos show protesters badly injured and being detained.

The protests last year were sparked by a redevelopment plan for a popular square in Istanbul, but evolved into a massive protest against the government of Prime Minister Recep Tayyip Erdogan. Millions of Turks took to the streets. Nineteen people were killed and thousands injured in clashes with police.