China blocks some Web searches about migrant protests

China is blocking searches on Google and microblogs for the name of a Chinese city where protests have erupted against local authorities. The move is part of an effort to suppress information on the rioting. Google searches in Chinese for Zengcheng, a city in the country's Guangdong province, result in the browser's connection to the server being reset, with no search results offered. Chinese authorities have also blocked searches for the city's name on some of China's most popular microblogs, including ones operated by Sina and Tencent.