Humans mourn what they have had and lost much more than they mourn the absence of what they never had.  This relative response is hard-wired, and universal.

So when London's peaceful prosperity is shattered, it is much more alarming than the same type of action in Nigeria, Yemen, Afghanistan, Iraq, Syria, India  or Pakistan, places where social order has never come close to the level that Londoners take for granted.

The mounting evidence that many peaceful parts of the world have found themselves under attack from malignant influences exported from those violent hot-spots spices this hard-wired human response for good reason.  Something should be done about it unless we want to abandon our peaceful, prosperous existence to live like savages.

When journalists pretend to be willfully blind to the obvious, we should ask why.