They are Muslims themselves, so just ignore them like I did. No Han Chinese will sympathize with radical Islam. I am telling you, when Indonesian Muslims massacred Chinese, those Muslims in China instead made bunch of excuses for the killing and blame Chinese instead. That's when I started realizing that Muslims are natural traitors to the country and their kinship is with other Muslims.
I am not sure about that, since northern Xingjiang has always been historically dominated by Han and other ethnics, while Uyghurs live in the southern part. Plus, even if that's true, any citizens have freedom to migrate anywhere in the country. The Uyghurs have migrated into inner land, too, lots of street vendors in big cities. That's rather a stupid excuse and only radical haters will kill people if some people move into your neighborhood.