What are some reasons why the musical hair was so controversial

Hair was a debut of Rock musical Broadway during the sixties which became famous even after a lot of controversies involved with it.

Explanation:

The reasons behind the controversy is involved with the hair was the nudity and drug use that was encouraged in this which at that time was unacceptable.

The hair was about some hippies from New York which later on was converted into a form of movie. This music showed the counterculture involved with open drug use open love and antiwar Thoughts.