Stinky removed from mural displays at Brooklyn Public Library exhibition. Supporter claimed character might be perceived as racist symbol. First criticism of Stinky in 80 years. Moomin Characters CEO accepts change as healthy discussion. Expert calls removal sudden and absurd. Critique based on appearance and first impression only. Stinky portrayed as mischievous troublemaker beloved for antics. Character lives contentedly on rocks without fixed home. Supporter likely unfamiliar with Moomin stories. Exhibition popular with young audiences. Show features Moomins illustrations and Jansson's life. Stinky remains in original books on display. Decision reported by Finnish newspaper. Moomins gaining US popularity like Snoopy. Exhibition open until September 30.