in washington, even a high school yearbook is fair game for debate, but omar, amazingly, hasn't had to explain her remarks. no one asked her. that is until the 9/11 commemoration last week. a man who lost his mother rebuked omar by wearing a t-shirt saying "some people did something." finally this weekend on cbs' "face the nation," omar was asked to explain what she said, if she is sorry at all. did she see why her remarks may have hurt some people. here is how she responded. >> 9/11 was an attack on all americans. w it was an attack on all of us. and i certainly could not understand the weight of the pain the victims of the families of 9/11 must feel. but i think it is really important for us to make sure that we are not forgetting, right, the aftermath of what happened after 9/11. many americans foundr themselves now having their civil rightsnd