I think you would need to ask the head of the German Police force that decided it was necessary to get your answer.
I'd be interested to see the factual data re number of sexual assaults on women over the years, on new years eve, same goes for other cities.
The Guardian report is here
https://www.theguardian.com/world/20...zone-for-women
The Independent report is here -
http://www.independent.co.uk/news/wo...-a7130476.html
The Spectator report is here
https://www.spectator.co.uk/2016/01/...d-is-shameful/
I think these 3 papers are left - centre and right politically - but they all carry the same message. Not all immigrants are sexual offenders obviously BUT from the independent they reported on a leaked Police document that said
"Authorities now think that on New Year's Eve, more than 1,200 women were sexually assaulted in various German cities, including more than 600 in Cologne and about 400 in Hamburg.
More than 2,000 men were allegedly involved, and 120 suspects — many of them foreign nationals — have been identified.
Only four have been convicted, but more trials are underway.
On Thursday, a court in Cologne sentenced two men in the New Year's Eve assaults. Hussein A., a 21-year-old Iraqi, and Hassan T., a 26-year-old Algerian, were handed suspended one-year sentences. Both arrived in Germany in the past two years, a court spokesman said. He declined to specify whether the two had sought asylum.
Officials have linked the sexual assaults to the influx of refugees. "There is a connection between the emergence of this phenomenon and the rapid migration in 2015," Holger Münch, president of the German Federal Crime Police Office, told Sueddeutsche Zeitung."
So I think there is a question for the authorities to answer - and they have by introducing women only safe zones in German cities, they are treating the symptom not the cause. Im sure there are white/black anglo saxon Germans that have assaulted women on NYE, but you would have to ask why have the German Police chosen to introduce this policy now ?