Where are the civilian casualties?

Has anyone read significant reports of civilian casualties? There seem to be few reports. Also, few civilians appear on any of the TV shots I see. Could be: 1. US is avoiding civilian casualties, and doing a darn fine job. 2. US is effectively controlling the media coverage to avoid images of civilian casualties -- but reports of them would still trickle out, via Al-Jazeera or elsewhere. 3. Insurgents have not been successful in using human shields. Perhaps because the remaining civilians are sympathetic to the cause in some way. Doesn't help your cause to kill your own supporters, or cause their deaths. 4. All of the above. You would think we would hear a story of a missile going astray, the wrong building being hit, etc. So far, very little of this.