Hong Kong (CNN) Tens of thousands of people marched through the Kowloon side of Hong Kong on Sunday in the latest of a long series of protests against a proposed law that would allow extradition to China.

Sunday's protest was the first anti-extradition demonstration to take place in Kowloon, an area across the harbor from Hong Kong Island and away from the city's financial district.

The choice of location was an attempt by the protesters to appeal to tourists from mainland China, who often go to Kowloon for shopping trips.

Hong Kong Police put the turnout at 56,000, while organizers said 230,000 attended. The police said the protests were "generally peaceful and orderly," but noted that six people were arrested. Five of those arrests were for assaulting a police officer, after protesters blocked roads Sunday night, while one person was arrested earlier in the day for failing to produce proof of identity.

The crowds gathered around West Kowloon station, which connects Hong Kong with mainland China. Many of the slogans were chanted partly in Mandarin during the protest so Chinese mainland tourists could understand.

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