I am still at a loss as to what to call this..accident? atrocity?  It seems certain now that Ukrainian Separatists (Putin’s proxy army) recklessly committed this act, thinking they were shooting at a Ukrainian military transport.  There is a civil war going on over there, though you would never know it by reading the American media.  So I’m settling on incident for now.  Here is a link to a story at the Daily Mail (UK) with in depth information on the surface-to-air missile system used to shoot down the jet.  If you don’t want to read the whole article, this graphic has a lot of info as well.