Artists from around the area say they were looking forward to participating in “Art in Protest,” which was being billed by promoters as an opportunity for people to exchange music, images, written works and other art that grew out of the mass protests against Gov. Scott Walker?s union-busting legislation introduced last year. But when Rep. Steve Nass, R-Town of La Grange, got wind of the event — which was being sponsored by UW-Extension?s School for Workers — his office strongly suggested it be called off.