The Fear of Openness...

...strikes again:

A political row erupted last night after counter-terrorism police arrested the shadow Home Office minister, Damian Green, after he published leaked documents allegedly sent to the Tories by a government whistleblower.

...

George Osborne, the shadow chancellor, told the BBC: "I think it is extraordinary that the police have taken that decision. It has long been the case in our democracy that MPs have received information from civil servants. To hide information from the public is wrong."

This is getting serious.