I liked most of the paragraphs of your post, except for this accusation:

{And from another side : I asked some people who used to harras girls, how do they feel if they met a scarved girl ? their answer was : "it is shame on us if we tried to harras such girls, if she accept to be harrased she wouldn't cover her body".}

I know many Muslim girls without Hijab and not looking for any single bit of harassment and wont allow it either. And they don’t regard admiring looks towards them as proof of their attractiveness.

I also know many Non-Muslim westerners (not necessarily religious) who wont allow this (men and women). They’re not seeking attention.

I know Egyptian Copts who will beat a guy up for starring at their girls.

Hijab is not for everywoman. Not every woman is a Muslim either.

Again, I admire your post.

Salam