96 The reproductive function of a woman is the onl y innate function which distinguishes women from men. It is the critical distinction upon which all Inequities toward women are grounded. A woman's menstruation is a sign of her ability to bear children. Toni Robertson. Sometimes We Do Offend, Girls. (Photo: eeva-inkeri.) Ann Newmarch and Mandy Martin are Australian artists living in Adelaide. Their posters were made while both were working with the Progressive Art Movement—a leftist group working with prisons, labor unions, etc. Newmarch is a member of P.A.M.’s Visual Group and the organization also has other groups working in other cultural areas. Toni Robertson lives in Sydney. She teaches screen-printing in workshops at Sydney University and works with the Earth- works Poster group. Sometimes We Do Offend, Girls is numbered 4/28 “as tampon came from day 4 of my period and 28 days is another myth”; it was sold at $4.00 to the rich, $2.00 to those earning less than $100 per week.