Well, this is a source directly from the UK, which features (as far as I know) the most extensive CCTV surveillance system in the world in London. http://libra

Well, this is a source directly from the UK, which features (as far as I know) the most extensive CCTV surveillance system in the world in London. http://library.college.police.uk/docs/what-works/What-works-briefing-effects-of-CCTV-2013.pdf http://library.college.police.uk/docs/what-works/What-works-... This source claims "CCTV is more effective when directed against specific types of crime; it is effective at reducing theft of and from vehicles, but has no impact on levels of violent crime." So I should amend my statement where I claimed CCTV doesn't deter criminals from committing acts of crime. Apparently there are some ameliorative effects for property crimes but not for violent crimes.