No sorry, there is no complex geopolitical matters at play here. It is actually very simple.

These are civilians minding their own business. You don't get the right to murder them just because you are fighting nearby with some other group of people.

If that most basic of human rights is not protected then nothing is.

You might maybe be able to excuse civilian causalities in some total war scenario where your own safety is literally at risk. But that is very far from what is happening here.