Victim surrounded by 20-30 men during attack. At least 90 criminal complaints filed for harassment by gangs at railway station. Attackers were drunk aggressive young men of Arab or North African appearance. Witnesses and police identified attackers as Arab or North African. Women touched everywhere by groping mobs. No one around to help victims. Attacks left victim scarred for life. Gangs overwhelmed groups of women. Harassment involved mass surrounding and assault. Police reports confirm ethnic profile of perpetrators.