Where my dad lives in Newcastle is a very nice area however every year there is a surge in crime when the local traveller fayre is held on the town moor.
The police and council insist that there's no correlation and that it's more local criminals using it as an excuse.
They seemed confused when I pointed out during a meeting with them one day that it's a bit odd they only break in to cars and houses for 2 weeks a year...nowhere near Christmas. Could they perhaps point out another area in the country with such a spike.
Appleby.
Literally couldn't make it up.