A committee of MPs says that there is a link between litter and burglary. http://news.bbc.co.uk/1/hi/uk_politics/3932527.stm
Now call me a sceptic but that seems a pretty huge conclusion to draw.
Imagine that in a moment of wild abandonment I furtively discard my Mars bar wrapper in the street. After three sleepless night tossing and turning with worry, I realise I'm not going to get that knock on the door in the middle of the night.
The next morning I know I've got this crime thing cracked. And I hold up the Post Office.