The New York Times Agency Photos
CHINA CAMERAS 2
A set of surveillance cameras at a busy crossroad in Urumqi, China, on July 20, 2010. The cameras, which are part of a national trend of surveillance, were installed after the city's ethnic Han and Uighur populations took part in the worst ethnic rioting in modern Chinese history in July 2009. (Gilles Sabrie/The New York Times)