There is no justification for targeting innocent people under any circumstances. I think we can all agree on that.
What is often a point of contention is whether implicit guilt is factored. While I find the practice despicable in the face of civilians and children being put in bodybags, there is still a point in that the political and business interests in the West have been profiting off the selective destabilization of nations in the Middle East for the last several decades so in this global village of ours eventually the upheaval spread in our collective back yards.
We are at least partially morally responsible for part of this ugliness in many ways. I was among those who enabled that silly Facebook French overlay to honor (as if I'm honoring anything that way) the terrorist attack's victims but where was the outrage when a plane carrying 224 people was brought down by ISIS only a few days ago? Or when we catch the news on TV where someone suicide-bombed the shit out of entire crowds of non-combatants - a quick search yielded 134 people dying in just one of them?
I'm not saying we shouldn't feel empathic for the latest victims and the pain their families are going through. We damn well should. But how do we justify not being as outraged about those other people's families?
Just because it's not happening in 'western' countries or these people have a different skin color and/or names it doesn't mean they're not dying. Back home in Greece I read daily about the efforts of freakin' fishermen in their little boats struggling to help refugees - mostly Sirians - being herded out of Turkey through the most inhumane means possible. You know that famous photo of the dead child who drowned and was washed up on a beach? They are burying children constantly out of the waters since when the trafficking networks' shitty boats have any issue at all they dump everyone, and of course it's kids who can't swim as well as adults. Last weekend I was outraged to read the story of this trafficker (who was paid basically all these desperate people had to carry them across Turkey's borders to Greece) who was spotted by the navy and pushed everyone into the sea trying to avoid capture. He was arrested, and I can't think of a punishment good enough for him, but not before most of his passengers drowned.
This is happening. Hundreds of thousands of people are in - past - the brink of despair. They're just trying to survive, and now they are being blamed by some because the very maniacs they are fleeing from are killing civilians in the nations they're trying to reach. It's crazy, and heart breaking.