Men who can't control their "hirhurim" when they see a woman should be the ones taking an alternate route home. That'd be the "tzanu'a" thing to do. But this is far more about power than it is about "tzeniut".
Wes Craven, director of 'Scream' and 'Nightmare on Elm Street', dies 76 (Haaretz)
from the article: Mea She'arim to ban women from certain Jerusalem streets during Sukkot