This happened at a time when collective insanity gripped the nation.

I think collective insanity has gripped the judiciary, and not for the first time.

It had been a silly indulgence gone mad, a collective insanity.

And then: mass collective insanity... It had never happened in living memory, but it was theoretically pos- sible.

Known to the world as the Astor Orphans, the Chanlers became famed for collective familial insanity.

Is there a collective insanity in Britain?

The victorious leaders harness the holy energy of collective insanity.

America 2008: beyond stupidity - this is clinical, collective insanity.

But it is also a hugely celebratory collective insanity, a world away from the portentousness and individualism of much current hip-hop and rock.

David Suzuki has suggested that to destroy our environment with so little regard for our future is a collective insanity that is suicidal.