Winner
Diverse in Unity
We had an interesting discussion about statistics and impossibility to prove that immigrants from certain cultural background cause proportionally more crime than others (yes, it was all about Muslims) in the "Future of Sweden" thread.
I checked the NationMaster.com for relevant data that would at least partially confirm my views. Admittedly, there are not enough statistics to prove (or disprove) this claim.
More on the point of this thread: I found an interesting statistic showing the percentage of foreigners in prisons in selected countries. What is really interesting is that countries which are more open to immigration also tend to have their prisons filled with foreigners, whose relative share is much higher than their total share of the population. For example in Netherlands, 36% of prisoners are foreigners, but their share of the population is only about 10% In Belgium, it is 40% of prisoners compared to 7% immigrant share of the population. In Sweden, it is 27% compared to 12%.
At the same time, my country, the Czech Republic, which has only few thousand Muslims among its population of 10.3 million, looks very different: 9.4% of prisoners are foreigners compared to 4.4% immigrant share.
Crime Statistics > Prisoners > Foreign prisoners by country
Immigration Statistics > immigrant population > Immigrants as percentage of state population by country
So, does it prove, that immigrants (mosty Muslims in case of Europe) tend to cause more crime than the general population, or not? I admit not all of the numbers fit (especially the US one looks very suspicious), but I think the general trend is obvious.
I checked the NationMaster.com for relevant data that would at least partially confirm my views. Admittedly, there are not enough statistics to prove (or disprove) this claim.
More on the point of this thread: I found an interesting statistic showing the percentage of foreigners in prisons in selected countries. What is really interesting is that countries which are more open to immigration also tend to have their prisons filled with foreigners, whose relative share is much higher than their total share of the population. For example in Netherlands, 36% of prisoners are foreigners, but their share of the population is only about 10% In Belgium, it is 40% of prisoners compared to 7% immigrant share of the population. In Sweden, it is 27% compared to 12%.
At the same time, my country, the Czech Republic, which has only few thousand Muslims among its population of 10.3 million, looks very different: 9.4% of prisoners are foreigners compared to 4.4% immigrant share.

Crime Statistics > Prisoners > Foreign prisoners by country
Immigration Statistics > immigrant population > Immigrants as percentage of state population by country
So, does it prove, that immigrants (mosty Muslims in case of Europe) tend to cause more crime than the general population, or not? I admit not all of the numbers fit (especially the US one looks very suspicious), but I think the general trend is obvious.