Killing civilians is just wrong on many aspects:
• Often civilians have no choice on the handling of political affairs (unless they directly voted for the fucking war in a community council; and, mind you, 1853 USA wasn't a direct democracy, nor Israel is today. Today's governments are further from a democracy than ever, considering)
• Waste of resources, they should be organizing to fight actual forces; this will just radicalize both parties and it won't bring a peaceful resolution
Should we just kill immigrants that come in our countries then? Or should we make fucking segregation part 2? Or maybe don't you think that promoting is just the best way to get to live like decent humans together independently from ethnicity? No, let's just behave like those nationalist monkeys of the 19th century