I am no great fan of Harriet Harman (she had my sixth preference in the deputy leadership ballot.) But she doesn't deserve today's ridiculous media fuss about her wearing a bullet-proof vest for a photo opportunity to publicise neighbourhood policing. And the po-faced political correspondents who attack her for it have attended many such photo-ops where politicians donned uniforms in the past, going back to Margaret Thatcher.* So, Harriet should stand her ground, though it won't make PMQs any easier for her tomorrow.
*UPDATE: Danny Finkelstein provides the proof at Comment Central.