Ms. Sheehan is now telling her story.
According to her she had not been warned about protesting, nor had she planned to protest. She says she opened her jacket because she was warm from walking up the stairs. Security guard Mike Weight roughly dragged her out of the building without asking her to zip her jacket or change the shirt. Weight's demeanor toward Ms. Sheehan didn't change until someone told him who he had arrested.
Why was it necessary to arrest her? I understand that you can't have political messages in the peanut gallery because it would only make an already embarrassing spectacle worse. But how hard is it to walk the nice lady out of the building? You're a real tough guy there, Mikey Weight.