Are we taking the terror thing too far?

One of the most level-headed things I've read about the shooting of Charles de Menezes by the Met:

However, [Clare Montgomery, QC] told the jury: "If the Metropolitan Police are exposing the people of London to danger because they are not doing what is reasonable and what is practicable, it is surely in the interests of Londoners that you say so."

The case for the defence sounds a bit more like a John le Carré novel.