If I read the Bible, I can also find a few harsh verdicts. Every religion can be abused. We're not talking here about religion and faith. We are talking about the politicization of Islam, and, by the way, it is first and foremost exerting pressure on the majority of peaceful Muslims who live here in Germany.

We need to finally be proactive in enlightening people from Islamic cultural groups. And this applies to immigrants already here as well as to current refugees. The German constitution stands above the Sharia. Schools need to offer classes on gender equality. You also have to offer an alternative to young men with a penchant for violence.

People aren't stupid. They saw what was happening at the Cologne central station. A lawless space was created in the middle of a city of over a million. That has to be addressed and it has to be done so in a sober-minded way.

I can't just go up to people standing in the snow at the German-Austrian border and ask them: "Are you an Islamist?" When people flee to us from war zones, we first have to help. But we also have to be quick to look very closely at who it is that is coming.

If I read the Bible, I can also find a few harsh verdicts. Every religion can be abused. We're not talking here about religion and faith. We are talking about the politicization of Islam, and, by the way, it is first and foremost exerting pressure on the majority of peaceful Muslims who live here in Germany.

But since the end of the 1970s, at the beginning of the revolution in Iran under Khomenei, we have experienced a politicization of Islam. From the beginning, it had a primary adversary: the emancipation of women. With more men now coming to us from this cultural sphere, and some additionally brutalized by civil wars, this is a problem. We cannot simply ignore it.

Mastery of the German language and the acceptance of our legal system has to become part of the criteria for naturalization.