About 70 Tibetan protesters scuffle with police outside the Chinese Embassy in New Delhi, India. Five protesters defied security Friday and stormed into the embassy's cultural center. Police reportedly detained 33 protesters.

Mustafa quraishi / The Associated Press

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China assails Dalai Lama, Pelosi for their stance on Tibet Chinese troops mass over much of Tibetan region China retakes Tibetan capital, warns rioters; dozens dead China ramps up its media drive to report Tibetan crisis its way China steps up crackdown as Tibetan protests widen

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BEIJING — China issued a "Most Wanted" list of 21 rioters Friday — shown on the Internet in grainy photos waving knives and fighting during last week's violence over Chinese rule in Tibet. Thousands of troops continued to push into western China to contain unrest.

U.S. House Speaker Nancy Pelosi gave support to the Tibetan cause on a visit to the Dalai Lama, calling China's crackdown "a challenge to the conscience of the world."

Her criticism added to a chorus of international concern over Beijing's harsh response to the anti-government protests, as China sought to blame supporters of the Tibetan spiritual leader for unrest that is posing the biggest challenge in two decades to Beijing's control of Tibet.

"If freedom-loving people throughout the world do not speak out against China's oppression in China and Tibet, we have lost all moral authority to speak on behalf of human rights anywhere in the world," Pelosi told a cheering crowd in Dharmsala, India, seat of the Dalai Lama's government-in-exile.

The California Democrat dismissed China's claim that the Dalai Lama was behind the violence in Lhasa, the Tibetan capital, as making "no sense."

President Bush has long said the United States and China have "a complex relationship," and that complexity was on full display this week, The New York Times reported.

While his administration has called for an end to the violence, and Secretary of State Condoleezza Rice phoned her Chinese counterpart to urge restraint, Bush has remained silent.

China's response to last week's riots in Lhasa drew world attention to its human rights record and threatens to overshadow its attempts to project an image of unity and prosperity ahead of the Aug. 8-24 Olympics in Beijing.

China's official news agency issued an updated casualty toll late Friday for the unrest in Lhasa. Xinhua said 18 civilians and one police officer died and 623 other people were injured.

Tibetan exile groups have said 99 people were killed — 80 in Lhasa and 19 in Gansu province. Casualty estimates are hard to confirm because China keeps tight control over information.

On Friday, Chinese authorities intensified a manhunt for the suspects, posting their photos — taken from video cameras and security footage — on major Internet portals.

Shown under the heading of "Lhasa Public Security Bureau's Wanted List of Criminal Suspects," the 21 people are accused of endangering national security and cited for beating, smashing, looting and arson.

One suspect is shown wielding a long sword, and another is a mustachioed man who had been shown on news programs slashing another man with a foot-long blade.

Xinhua said two of the 21 suspects had already been arrested, and that a third had turned himself in. Authorities called on the public for help, offering rewards for information and guaranteeing the anonymity of tipsters.

Police have arrested 24 people, and 170 turned themselves in, Xinhua has said.

The protests in Lhasa — a stunning show of defiance against 57 years of Chinese rule — sparked sympathy demonstrations in neighboring provinces, prompting Beijing to deploy thousands of troops across a wide swath of western China where more than half of China's 5.4 million Tibetans live.

Moving from town to town, police set up blockades and checkpoints to keep Tibetans in and journalists out.