It's good to know that immigrants, no matter the nationality, ethnicity, or religion, follow a normal distribution. Some of them are criminals or bigots, whereas most of them are just normal people trying to find work and raise a family.
Europe needs immigrants, it would be foolish to close borders. But we need to be tougher on crime, too. Immigrants that don't quickly adopt our laws and liberal values should be expelled because otherwise, the crime rate goes up, then far-right parties take over. And what happens next in such scenarios is that the law-abiding immigrants suffer, actually.