China is warning that Taiwan is stirring new tension with its massive protest march against Beijing's new anti-secession law.

Mainland newspapers ran a dispatch from the official Xinhua news agency Sunday, saying Taiwan's independence forces are the biggest threat to peace and stability in the Taiwan Strait.

The commentary says the non-peaceful means mentioned in Beijing's anti-secession law is targeted at secessionist forces, and not at Taiwan compatriots.

Taiwan President Chen Shui-bian and hundreds of thousands of protesters took to the streets of Taipei Saturday to oppose the law.

The United States, among other countries, is concerned Beijing may use the law to declare war on Taiwan, which China considers part of its territory.

Some information for this report provided by AP and AFP.