Or perhaps more precisely -- with nudity.
And even more precisely -- with public nudity.
Last month, the San Francisco Board of Supervisors voted by the barest (pun not intended) margin -- 6 to 5 -- to ban public nudity. By public nudity, the law refers only to displaying one's genitals in public. San Francisco women are still free to walk around topless. But that is not unique to San Francisco. Years ago, the highest court in New York state ruled that since it sees no difference between a man's chest and a woman's, women should be free to walk around topless, just as men do.
Now why is all this significant?
Leftism seeks to undo most of the values that are distinct to Judeo-Christian religions. That is why the left has always been so anti-religious and especially anti-Christian. Karl Marx understood that a vibrant leftism and a vibrant Christianity could not coexist. He was right.
Two of the many areas of conflict between Judeo-Christian values and leftism concern the separation between the holy and the profane and separation between humans and animals.
The essence of the Hebrew Bible -- as transmitted by Christianity -- is separation: between life and death, nature and God, good and evil, man and woman and between the holy and the profane.
The reasons to oppose public nudity emanate from this Judeo-Christian list of separations.
When human beings walk around with their genitals uncovered, they are behaving in a manner indistinguishable from animals. A major difference between humans and animals is clothing; clothing separates us from -- and in the biblical view, elevates us above -- the animal kingdom.
Seeing any animal's genitals is normal. Anyone who demanded that animals' genitals be covered would be regarded as a nut by the most religious Jew or Christian.
But one of our human tasks is to elevate us above the animal. And covering our genitals is one important way to do that.
The world of the left generally finds this animal-human distinction unnecessary. For years now, I have been reading article after article in major liberal newspapers and magazines about how much more alike humans and animals are than we ever thought. The theme of these articles is how narrow the differences really are between humans and animals.
Public nudity certainly forwards that theme.
The second reason to oppose public nudity also comes from the list of separations: the concept of the holy, or sacred.