Your comment sounds smart, I have to say. But I hope you are not justifying civil casualties just becuase terrorists "hide" behind civilians.

First, you should ask yourself what a "terrorist" is, and if USA has the right to kill them and invade a country where they were not invited to go.
Second, you should ask yourself why there were at least 109,000 deaths in the Iraq war, which 66.000 where civilians. It's the majority, it's not just "colateral damage".
Third is a suggestion. Don't believe what they say before checking other sources and the interests behind each source.