This picture tells a story.
Either:
(a) We all need to wear a stab jacket when walking the street, even if flanked by three policemen,Her excuse that it is like wearing a hard hat when on a construction site is utterly absurd. You wear a hard hat on a construction site because things might fall from above - and, well, it's the law. Wearing a stab jacket on the street, however, is certainly not on the same level.
(b) Only Harriet Harman needs to wear a stab jacket because she's more important than us, or
(c) We're all seeing things and Harman isn't really wearing a stab jacket.
