 As the controversy continued, Hornaday remained unapologetic, insisting that his only intention was to put on an "ethnological exhibit".In another letter he said that he and Madison Grant, the secretary of the New York Zoological Society, who ten years later would publish the racist tract "The Passing of the Great Race", considered it "imperative that the society should not even seem to be dictated to" by the black clergymen.Still, Hornaday decided to close the exhibit after just two days, and on Monday, September 8, Benga could be found walking the zoo grounds, often followed by a crowd "howling, jeering and yelling".