The responsibility to care
Anonymous coward wrote: "So we are all duty-bound to stand in shock at terrorist attacks lest the everlasting shame of having shown too little empathy with the victims of said attacks will fall upon us?"
No one said that. You are attempting to create a strawman and it won't work. The other commenter was referring to the clear lack of compassion shown by some commenters here towards those that have been hurt and killed as well as to those who - but for some luck - would have been killed, mutilated, and burned in these incidents.
Being grateful for these people not being hurt or killed is a sign of a civilized human being. The opposite is also true. It seems to me there is a particular madness infecting those who hate/fear the governments of the UK/US that they will acknowledge nothing that in any way would tend to even in the most remote way validate anything said governments do, even to the detriment of their basic humanity.