Gloucester crime levels plummet.

'A county's crime rate fell to a 20-year low after a notorious criminal family was jailed, police revealed yesterday. The Johnson family was a ruthless gang of travellers who carried out countless crimes over two decades, from cash machine raids to sheet metal thefts'

Naturally, we are NOT permitted to extrapolate from this in any way.

LINK: http://www.dailymail.co.uk/news/article-1195205/Conviction-travelling-family-reduces-crime-rate-county-20-year-low.html