Police initially allowed about 200 protesters to march from the Opera House in Hanoi through the streets, but after 30 minutes ordered them to disperse. When some continued, police arrested about 20 demonstrators and put them into a large bus that then quickly drove from the scene. It was unclear where they were taken, but in the past people detained at anti-China protests have been held briefly then released.
As tourists and morning strollers looked on, protesters shouted “Down with China!” and waved banners bearing the slogan “China’s military expansion threatens world peace and security.”
A smaller protest also took place in Ho Chi Minh City, according to blogger and activist Huynh Ngoc Chenh. He about 100 people gathered for 10 minutes before being dispersed.
Vietnam has alleged that Chinese shipping vessels sabotaged one of its seismic survey vessels in the South China Sea. China had earlier issued new passports containing a map showing the sea as belonging to it.