I stumbled upon another anti-Islam site, billionbibles.org. They have an article on Taharrush Gamea which they define as the coordinated sexual attack of a girl or a woman in public by a mass of Muslim men. Their definition implies that "taharrush gamea" has something to do with Islam. I had never heard of this before.
I'm skeptical about this, as it contradicts numerous Islamic rules (e.g. Qur'an 24:30 writes: "Tell the believing men to lower their gaze and be modest. That is purer for them."). I'm seeking to check what "taharrush gamea" actually is, and its relevance to Islam (if any).
Question: What is "taharrush gamea" and is it part of Islam?
Edit: Google Trends demonstrates the the phrase "Taharrush Gamea" is a new concept:
It shows the search term "Taharrush Gamea" became popular around January 10-16, 2016, and was unheard of before then (Google Trends has data from 2004).