The Church of Stop Shopping active in NYC
Preaching for the Church of Stop Shopping and others are these few folks according to this New York Times story (registration required):
Other performers preach the same gospel, with their own twists. Ange Taggart, who lives in Nottingham, England, turns up in places like Troy, N.Y., to go into a store, buy a lot of things, and then return them. She recently filled a cart with Martha Stewart products at Kmart, then put them on the conveyor in a certain order, so that when she got her receipt, she said, the first letters on the itemized list spelled "Martha Stewart's hell."
There is also Andrew Lynn, who created Whirl-Mart last year. He gets a group of people together, everyone with a shopping cart, and they stroll the aisles of Wal-Mart or Kmart, putting nothing in the carts. When store managers tell him to take his protest elsewhere, he tells them: "This isn't a protest. We're performing a consumption-awareness ritual."