BERLIN German Chancellor Angela Merkel faced growing pressure to harden her line on refugees on Monday as the first extensive police report on New Year's Eve violence in Cologne documented rampant sexual assaults on women by gangs of young migrant men.
Cologne police said at least 11 foreigners, including Pakistanis, Guineans and Syrians, had been injured on Sunday evening in attacks by hooligans bent on revenge for the assaults in the city.
Interior Minister Thomas de Maiziere condemned those attacks and warned against a broader backlash against refugees following the events in Cologne, which have deepened scepticism towards Merkel's policy of welcoming migrants.
The right-wing Alternative for Germany (AfD) party seized on the latest developments to attack the chancellor while members of her own conservative party warned that integrating the hundreds of thousands of migrants who arrived last year would fail if the influx were not stopped immediately.
"If the influx continues as it has, then integration can't work," said Carsten Linnemann, a lawmaker in Merkel's Christian Democrats (CDU). "If we get another 800,000 or a million people arriving this year, then we won't be able to do this," he added, playing on Merkel's optimistic "we can do this" mantra.
A report from the Interior Ministry in the state of North Rhine-Wesphalia (NRW), where Cologne lies, said a total of 516 criminal complaints had been registered, 237 of which were of a sexual nature.
A separate report from the Cologne police gave graphic descriptions of the crimes, listing case after case of women surrounded by gangs of men who put their hands in the victims' pants and skirts, grabbed them between the legs, on the buttocks and the breasts, often while stealing their wallets and cell phones.
A total of 19 suspects have been identified, all of them foreigners.
Ralf Jaeger, interior minister in NRW, spoke of "serious failures" by the police, who were significantly outnumbered but never called for reinforcements.
He also criticised them for refusing to communicate in the days after New Year's Eve that the vast majority of the perpetrators were people with migration backgrounds, blaming this on misguided "political correctness".
"More than 1,000 Arab and North African men gathered on New Year's Eve near Cologne cathedral and the main train station. Among them were many refugees that came to Germany in the past months," Jaeger told a special parliamentary committee in NRW.
"After alcohol and drug excesses came the excesses of violence, peaking with people who carried out fantasies of sexual power."
A survey conducted by polling group Forsa for RTL television showed that 60 percent of respondents saw no reason to change their attitude towards foreigners after the assaults. About 37 percent said they viewed foreigners more critically.
Jaeger said the sexual assaults had come mainly from North Africans who had travelled to Cologne from other cities, but he too warned against a broader backlash against migrants.
"To label certain groups, to stigmatise them as sexual criminals, would not only be wrong, it would be dangerous," he said. "Those people that make a direct link between immigration and violence are playing into the hands of right-wing extremists."
Police officer Norbert Wagner told a news conference that rocker and hooligan gangs had published an appeal on the Internet on Sunday to join them in "violence-free strolls" through Cologne, when in fact they were prowling for foreigners.
Among the victims were six Pakistanis, three Guinean citizens and two Syrians. Witnesses had also seen another man of African origin being attacked, but his identity was unclear because he had not contacted authorities, Wagner said.
No arrests have been made. Local police are beefing up their presence in downtown Cologne in the coming days to prevent further attacks on foreigners.
The Cologne police force has also set up a 100-strong team to investigate the New Year's Eve attacks. They are working with prosecutors and criminal investigators who are looking at exchanges on social media in the run-up to the night.
Merkel has repeatedly resisted pressure to introduce a cap on the number of migrants entering Germany, arguing that this could be enforced only by shutting German borders, a step that would doom Europe's Schengen free-travel zone.
She has talked tougher in recent months, vowing in December to "measurably reduce" arrivals and promising at the weekend to give authorities more powers to crack down on migrants who commit crimes, including deporting them.
But her opponents have been swift to blame her for the events in Cologne.
"Anyone who opens the borders wide must know that they are bringing Tahrir Square to Germany," leading AfD politician Dirk Driesang said, referring to the square in Cairo that was the scene of killings and sexual assaults in 2011.
"Cologne cathedral, when it was completed by Kaiser Wilhelm I, was a symbol of the inner unity of the German Reich after its founding in 1871. Will it now become a symbol of its collapse?"
(Additional reporting by Matthias Inverardi & Tina Bellon; Writing by Noah Barkin; editing by David Stamp)
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