Have you read the article? Until recent years, "there is no relationship between the scale of refugee inflow and the crime rate". Now there's a (in my opinion) small increase in the probability that a crime is perpetrated by a foreigner, but this seems to be _mostly_ related to the demographics of immigrants:
> This was attributed by criminologists to the subgroup consisting of men aged 16–29 is disproportionately large at 34% of the total [number of immigrants] and that young males are overrepresented as criminals in all parts of the world, rather than to their ethnic origin.
It seems pretty clear to me that the benefits of immigration outweigh this, as long as the total amount of crime stays at a low level, which subjectively seems to be the case.
If you don't think immigration is the source of the majority of the crime in europe, I suggest you watch any documentary on French prisons and look at the inmate.
Now there might be many reasons for that, poverty probably plays, etc. But the outcome is fairly obvious.
> This was attributed by criminologists to the subgroup consisting of men aged 16–29 is disproportionately large at 34% of the total [number of immigrants] and that young males are overrepresented as criminals in all parts of the world, rather than to their ethnic origin.
It seems pretty clear to me that the benefits of immigration outweigh this, as long as the total amount of crime stays at a low level, which subjectively seems to be the case.