When I was in Paris a little bit ago, they sent all their young girls to you with their bellies pushed out yelling "BABY, BABY!" and demanding money.
A certain other CP member would then chase right back after them yelling "BABY BABY".
He was on to something - Give them a taste of their own medicine and they get very confused and run away. For the people who were charged money by Gypsy's for entrance to free spaces, I suggest standing beside them asking them for money for kiosk rental.