This, and it's sister thread of the deaths in Iraq, are very thought provoking threads and sets of placemarks for a number of reasons.
Firstly, it can be seen as a work keeping a close watch as a signifcant historical event unfolds; a way for people to increase their understanding of the events of the day. Greater understanding can lead to greater motivation to do what an individual thinks is right, whatever that may be. Also, perhaps an electronic equivalent of the war memorials that are found in towns and villages all over the world.
Secondly, as with all thought provoking ideas it seems to have provoked anger, at least in one quarter. Although entitlement to an opinion is a given right, postings of the nature above are clearly not appropriate, whatever the subject matter.
My feelings, for what they're worth, are that the mapping of this data is a really helpful way of illustrating the nature of the conflict, and of the modern globalised world, and it is a way of making the nature of the event more relevant to people, like me, who, by chance, have little or no direct relationship with the conflict.
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All in all, using Google Earth can only help us understand our world and, more importantly, each other better. Good.