Politics aside. While seeming scary, this kind of device is actually widely deployed in China, especially in schools. It proves to be very effective for police use:<p>1. Dull tipped, won't penetrate bodies.
2. While in use, no direct body contact between you and the other.
3. Effective, since human doesn't really have much strength in the chest / stomach area.<p>I don't think Mirror chose a good picture for the use, this one's probably better: <a href="http://news.china.com.cn/txt/2010-04/30/content_19937607.htm" rel="nofollow">http://news.china.com.cn/txt/2010-04/30/content_19937607.htm</a><p>Honestly better than guns and more effective than shields.