Sun Zhongjie, 19, chopped off his own finger as a protest against police entrapment
A severed finger sparked an online uproar that went viral. And very quickly, rattled authorities here took note. The story of Sun Zhongjie, a 19-year-old driver who chopped off his finger to decry police entrapment, shows how the Internet has become an effective tool of public protest in this tightly controlled country.