As reported in media, the Chinese police authorities have installed 40,000 security cameras in Urmuqi, the capital of Chinas Xinjiang region. The city is bracing for first anniversary of the deadly ethnic violence of 2009. These cameras have been installed in more than 3,000 public buses, 200 bus stations, along 4,000 roads, 270 schools and more than 100 large supermarkets and malls. The cameras are monitored round the clock from a police command centre which is tasked with ensuring security in key public places, allowing people of all ethnicities to enjoy quality public services. The aim is to keep the Urmuqi city peaceful for all ethnic communities. I wonder why Pakistan government does not follow China in security arrangements and order installation of CCTV cameras all over the important places in our cities. In Karachi, there are a lot of CCTV cameras installed but I have never heard of anyone getting caught because of a camera footage of him snatching a mobile or a car, etc. We need to make use of modern technology to control crime. -MUBASHIR MAHMOOD, Karachi, July 6.