COLOGNE, GERMANY - JANUARY 1: Visitors celebrate New Year's Eve in front of Hauptbahnhof main railway station not far from where on New Year's Eve one year ago hundreds of apparently coordinated sexual assaults were perpetrated against women, on January 1, 2017 in Cologne, Germany. City authorities have deployed around 1,500 police officers - more than 10 times last year's number, to maintain security during this year's festivities. Security across Germany is high due also to the recent Berlin terror attack, in which suspect Anis Amri drove a truck into a Christmas market and killed 12 people. (Photo by Maja Hitij/Getty Images)
