That was probably the coolest level ever in a video game. The way they force you to walk through slowly and kill all those people was pretty bad ass. A few times there was a wounded person trying to crawl away. It was such a pathetic sight I almost felt guilty for shooting them in the back. Actually surprised there wasn't more uproar about that level.
Video for those that haven't played the single player yet:
https://youtube.com/watch?v=owMcFhcix_s