EMMA BATHA CHINA is forcing hundreds of thousands of ethnic Uighurs and other minorities to pick cotton by hand, a U.S. think-tank said, sparking calls for governments to ban all cotton imports from the Xinjiang region. The vast western province, home to about 11 million ethnic Uighurs, produces 85% of China's cotton and 20% of the global supply, which is used by fashion brands worldwide. The Washington-based Center for Global Policy said in a report it was very likely a major share of cotton from Xinjiang was "tainted with forced labour". China's Foreign Ministry spokesman Wang Wenbin dismissed the allegations.…