I disagree with the premise of your post and respectfully suggest that you need to find out more about equality and sexual discrimination as you have vastly over simplified it.
I have heard from many many women that this kind of shit, cat calling, wolf whistles etc etc makes them feel very uncomfortable. I have read many many articles by women who say that these acts make them feel uncomfortable (at the very least).
But now I am reading from some men on NSC that wolf...
Anyone with half a brain and a modicum of respect would have already banned themselves from doing this. Why does it take the government to force us to respect each other?