The premise of this discussion is wrong to start with. חז״ל already told us: כל המרחם על אכזרים סופו שמתאכזר על רחמנים. "He who is merciful to the cruel will end up being cruel to the merciful"
It's a nation of people who put the goal of slaughtering Jews at the top of their list. Jews need not worry about civilians being innocent or not when they are fighting to protect themselves from people who have the goal of killing them.