Max Klingberg, the director of the Frankfurt-based International Society for Human Rights (Internationale Gesellschaft für Menschenrechte, IGFM), says that much of the aggression is being perpetrated by Afghans and Pakistanis, who are "even more Islamic than some Syrians and Iraqis." He warns that conflict in the refugee shelters will only become worse: "We have to dispense with the illusion that all of those who are coming here are human rights activists. Among those who are arriving here now, a substantial number are at least as religiously intense as the Muslim Brotherhood. "We are getting reports of threats of aggression, including threats of beheading, by Sunnis against Shiites, but Yazidis and Christians are the most impacted. Those Christian converts who do not hide their faith stand a 100% probability of being attacked and mobbed." In a September 29 interview with the newspaper Passauer Neue Presse, the head of the German police union (Deutschen Polizeigewerkschaft, DPolG), Rainer Wendt, warned that "brutal criminal structures" have taken over the refugee shelters and that police are overwhelmed and unable to guarantee safety and security. He called for Christians and Muslims to be separated before someone gets killed: "We have been witnessing this violence for weeks and months. Groups based on ethnicity, religion or clan structures go after each other with knives and homemade weapons. When these groups fight each other at night, all those German citizens who welcomed the migrants with open arms at the Munich train station are fast asleep, but the police remain awake and are left standing in the middle... "We can only estimate the true extent of violence because women and children are often afraid to file a complaint. Since it is also about sexual abuse and rape... "Sunnis are fighting Shiites, there are Salafists from competing groups. They are trying to impose their rules in the shelters. Christians are being massively oppressed and the Sharia is being enforced. Women are forced to cover up. Men are forced to pray. Islamists want to introduce their values and order at the shelters. Wendt gave the interview days after 300 Albanian migrants clashed with 70 Pakistani migrants at a refugee shelter in Calden, a town in the state of Hesse, on September 27. More than a dozen people, including three police officers, were injured in the melee, which erupted after two migrants got into a fight while waiting in line at the canteen. It took 50 police officers several hours to restore order at the shelter, which is home to 1,500 migrants from 20 different countries. More than 60 migrants, including ten children, were injured after Pakistanis and Syrians clashed at the same shelter on September 13. The fight broke out just after midnight, when someone sprayed mace into a tent filled with sleeping migrants. Police did not inform the public about the fight for more than a week, apparently to prevent fueling anti-immigrant sentiments. The question is why are Pakistanis going as refugees to Germany?