Not true. The Han were not being murdered by Uighurs regularly. And every housing development has a gate and guardhouse, almost always has been like that since the danwei days. What is true is that the Han have been scared into fearing the Uighur by twisted news reporting. And once they are scared, any action by a minority looks scary. It’s also true that Uighur have lashed out after horrible treatment at the hands of the incoming Han. It’s understandable but regrettable, especially when the news reports only the one side. And yet, there are plenty of good relationships between the two peoples, but we never hear about that either. There are people on the ground trying to overcome hatred.