Why nudity is a taboo, but drag queens are accepted by the people and law?

Nudity is something natural, showing something who we are. Drag queens are interpretations how guys can look. But still it's officially accepted (by people and law) that guy dressed as woman is ok and nothing is wrong with him, but when someone naked would show up on the street or some public place then people would immediately call the police. In this case people are not tolerant at all.

Why nudity is a taboo, but drag queens are accepted by the people and law?
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