From the BBC:
Campaigners in Egypt say the problem of sexual harassment is reaching epidemic proportions, with a rise in such incidents over the past three months. For many Egyptian women, sexual harassment - which sometimes turns into violent mob-style attacks - is a daily fact of life, reports the BBC's Bethany Bell in Cairo....
Marwa, not her real name, says she worries about being groped or verbally harassed whenever she goes downtown. She says it makes her afraid.
"This is something that scares me, as a girl. When I want to go out, walking the street and someone harasses or annoys me, it makes me afraid.
"This stops me from going out. I try to be excessively cautious in the way I dress so I avoid wearing things that attract people."
The day I met Marwa, she was wearing a long headscarf pinned like a wimple under her chin, and a loose flowing dress with long sleeves over baggy trousers.
But dressing conservatively is no longer a protection, according to Dina Farid of the campaign group Egypt's Girls are a Red Line.
She says even women who wear the full-face veil - the niqab - are being targeted.
"It does not make a difference at all. Most of Egyptian ladies are veiled [with a headscarf] and most of them have experienced sexual harassment.
"Statistics say that most of the women or girls who have been sexually harassed have been veiled or completely covered up with the niqab."...
And the harassers are getting younger and younger.
On the Qasr al-Nil bridge in central Cairo, a hotspot for harassment, I met a group of teenage boys hanging out near street stalls blaring loud music.
When I asked them about a recent case of mass harassment in which women at a park were groped by a gang of boys, they told me the girls brought it on themselves.
"If the girls were dressed respectably, no-one would touch them," one of them said. "It's the way girls dress that makes guys come on to them. The girls came wanting it - even women in niqab."
One of his friends told me the boys were not to blame, and that there was a difference between women who wore loose niqabs and tight ones.
A woman who wore a tight niqab was up for it, he added.