Firstly - my condolences to Flying Mermaid for the loss of your friends.
I may be wrong, but believe that SAM guidance systems (target acquisition radar TAR) are equipped with the ability to identify friend-or-foe (IFF) capabilities. Which means that not only did they (whoever) seek this target, but they ignored the warning that this was a civilian international aircraft and pulled the trigger nonetheless. Which makes this whole thing even more galling.
What really resonates with me though, is the loss of 80 children, and 3 infants travelling as family groups and >100 researchers travelling to a conference to make the lives of people they didn't know better. Reading the manifest is sobering.
MH17 passenger manifesto emerges | News.com.au
What's super-depressing is that flying is still safer than driving!