[c312]

except those civilians weren't killing americans and they were the direct target of attacks

Iraqi citizens who are killed is accidental and partially the insurgents fault, they are the ones disguising themselves like civilians so we never know who is a bad guy and who isn't.
We spend billions on pin-point bombs to limit civilian casualties, but they happen and it's unfortunate, but it happens.

the situations are different and aren't appropriate for the analogy.