Unfortunately, I don't think generating a load of anti-Chinese sentiment in Europe and North America is going to make the Chinese feel less threatened by the Uyghurs. Rather the reverse, I expect. So I'd recommend people express their support for the Uyghurs without, in effect, calling for a holy war against China.
I agree. On the other hand, how to put pressure (by, for example boycotting the upcoming Beijing Winter Olympics) without providing propaganda-fuel for the CCP to drive one more wedge between Chinese people and the rest of the world?