中共「維穩」經費知多少？ 黑色產業鏈被揭

http://www.epochtimes.com/b5/17/9/30/n9686137.htm  (2017-10-3)

see also

https://cn.nytimes.com/china/20120919/cc19qiangang2/zh-hant/

https://baike.baidu.com/item/%E7%BB%B4%E7%A8%B3

https://www.youtube.com/watch?v=FzCjxzDHeY4