I think you have addressed the core of the issue. Criminality isn't tied to race, or religion but to an individual's socio-economic background. Poor people are

I think you have addressed the core of the issue. Criminality isn't tied to race, or religion but to an individual's socio-economic background. Poor people are more likely to commit crimes than other. Maybe cultural factors can come into play, but probably in less significant proportions. I do not think however that it is realistic to expect to integrate culturally AND economically that many people at once. If I am right, it means that crimes committed by immigrants will rise even more (not because they are immigrants, but because they are poorer) causing even more frustration until we reach a breaking point, where people say "enough!". I think this would be a tragedy.