Emily, You don't need to give the mobs of roughly a thousand men (in many different cultures) amassing together and working in gangs to sexually assault, rob and rape several hundred in a public area in contemporary civil society and in view of the police where police have not called for reinforcements, not documented it properly and gave false statements protecting the perps.
Half of that would do. Say 500 men. A link would be useful. Give a recent incident in Cologne for relevance. Or Germany, itself.
Maybe the Cologne police think the same as you. Other men carry out sexual assaults, so why zone in and prevent or deal with the attack by the mobs of a thousand. Maybe that is why the reinforcements weren't called in or why a false statement was given out. The women must be a bit unreasonable to object to being attacked by a thousand men with onlooking police not taking it seriously then or afterwards. And still people trying to make it a non issue.
Do you think if serious crimes occurs, the perp should get away with it 'cos other people commit crimes? And the police say it was peaceful and nothing really happened.