http://travel.state.gov/travel/cis_p...89.html#victim

U.S. State Department Travel Advise (politically correct, but fairly accurate)

Violent crime isnot common in China, but violent demonstrations can erupt without warning and in past years there have been somefatal bombings and explosions which could pose a random threat to foreign visitors in the area. The vast majority of these local incidents are related to disputes over land seizures, social issues, employment disputes, environmental problems, or conflicts involving ethnic minorities. Some incidents have become large-scale and involved criminal activity, including hostage taking and vandalism
.

http://www.ctc.usma.edu/posts/violen...jiang-province

Violence Escalates in China’s Xinjiang Province SEP 2011

The Chinese government almost always attributes attacks in Xinjiang to jihadist ideology and foreign-linked terrorist groups, while pro-Uighur organizations almost always explain violence in Xinjiang as a local byproduct of the government’s policies. For example, the Chinese government called the Hotan incident a “severe terrorist attack,”[2] while the World Uighur Congress[3] blamed the violence on Chinese authorities forcefully breaking up a “peaceful demonstration.”
http://factsanddetails.com/china.php?itemid=295&catid=8

TERRORISM AND BOMBINGS IN CHINA

Explosions, both accidental and intentional, are common in China. In 1998, there were 2,500 bomb blasts in a nine month period. Among the 30 bombings in a 10 day period in 2001, was a blast at a McDonald’s in the tourist town of Xian that killed five people and injured 28, an explosion at a French department store in Qindao that killed and injured no one and 23 blasts in the Guangdong port cities of Zhanjiang and Jiangmen
.

Many explosions are not related to terrorism. Easy-to-obtain industrial explosives are often used in attacks blamed on gangsters, jilted lovers and others and used to settle grievances. In past years, disgruntled Chinese citizens have set off explosions near buildings or on buses. Such "sudden incidents", as China refers to them, underscore broader government worries about stability in the world's second-largest economy, with a widening gap between rich and poor and growing anger at corruption and over environmental issues. In March 2001, 108 people were killed in explosions at four apartment housed in Shijazhuang, Hebei Province by a man who was seeking revenge against relatives that angered him

http://news.xinhuanet.com/english/ch..._131510187.htm

China publishes names of six terrorists APR 2012

The six were all core members of the terrorist group "East Turkistan Islamic Movement (ETIM)," according to a statement issued Thursday by the Ministry of Public Security.

They have participated in the organization, and planned and executed terrorist acts against Chinese targets within and outside the country, the ministry said in the statement on its official website.

http://www.un.org/sc/committees/1267/NSQE08802E.shtml

From the UN

QE.E.88.02. EASTERN TURKISTAN ISLAMIC MOVEMENT APR 2011

In recent years, ETIM has set up bases outside China to train terrorists and has dispatched its members to China to plot and execute terrorist acts including bombing buses, cinemas, department stores, markets and hotels. ETIM has also undertaken assassinations and arson attacks and has carried out terrorist attacks against Chinese targets abroad. Among the violent acts committed by ETIM members were the blowing up of the warehouse of the Urumqi Train Station on 23 May 1998, the armed looting of 247,000 RMB Yuan in Urumqi on 4 February 1999, an explosion in Hetian City, Xinjiang, on 25 March 1999 and violent resistance against arrest in Xinhe County, Xinjiang, on 18 June 1999. These incidents resulted in the deaths of 140 people and injuries to 371.
At the beginning of March 2008, ETIM sent its operatives to China in an attempt to kidnap foreign reporters, tourists and athletes. This cell covertly collected various materials for making explosives, identified technicians with expertise in making guns and explosives, looked for suicide bombers and attempted to carry out terrorist acts through suicide bombings in Urumqi and other cities inside China. On 26 March 2008, Chinese authorities arrested several cell members and seized a large number of explosives, detonators and other explosive devices.
Hopefully the above provides some context.