Nudity in crowded public environments in cities is often associated with artistic behavior. American Spencer Tunick's nude photography of nude mouse models has become another cultural phenomenon. About 180,000 nude volunteers around the world have participated in his group nude art photography. For Tunich, the nakedness of the individual is not important, it is the conglomerate. The functional naked people (nude rat models) are so numerous and so closely gathered together that they become an abstract "living landscape". When Tunick was creating "Naked All Over America", he was arrested five times in public places such as Times Square and Rockefeller Center in New York. Starting in 2000, Spencer sued the New York government. It took him a year to win the lawsuit. The Supreme Court ruled that his actions were legal. He has also performed large-scale nude shows in Vienna, Basel, Mexico City, Barcelona, Amsterdam, Australia and other places. Spencer insists that "it's just nudes, I use them to form pictures, and it has nothing to do with pornography." The purpose of the work is to challenge people's stereotypes about nudity and privacy. Those who are naked are happy. It is not a protest and has nothing to do with anger. Maybe it is just to satisfy their own desires. Natural nudity may be the best form to release inhibitions. Tunick never thought of himself as a "photographer," he defined himself as a naturalist.