It's also quite unhealthy. Diseases like cholera, Plague, and polio are rising among the homeless, all diseases related to poor sanitation. That stuff runs into the overflow sewers and winds up in the ocean as untreated sewage, too. That violates current EPA regulations.
In both North and South America, nudity is not seen as 'sinful' at all. It's only the Puritans in the United States that look upon it as 'sinful'.
Nudity was and is common among various indian tribes in both North and South America.
It is not an act of sex or a 'perversion' to them. They simply accept it as normal some of the time. They put on some clothes to keep warmer, or for ceremony, but not always.
Indeed, you will find most of the world is not bothered by it. It's really only in the United States, and only in Puritan country.
In the United States, only certain cities have banned it. Elsewhere, there is no law banning it. Simple nudity is not considered a sexual act.
A pervert is a pervert whether clothed or naked.