Pertinent quote from the results section of the publication:
Most people who come from a socio-economically less favorable background do not commit more crime than people who come from a more favorable background, and it also happens that people from a more favorable background do commit crime. This means that even if there is a connection between socio-economic background and involvement in crime, that connection is weak. It is not possible to appreciably predict who will commit crimes based on knowledge of people's socio-economic background.
https://bra.se/publikationer/arkiv/publikationer/2023-03-01-socioekonomisk-bakgrund-och-brott.html
The bigger factor is fatherless homes. The black community was far more functional before LBJ and no fault divorce made welfare queen a feasible career option for black women. The real question is how the white community stayed somewhat functional when feminism started destroying their families. Some of it is surely IQ, but again the blacks weren't always like this, at least to the extent they are now.
I have a feeling that IQ plays a bigger role than we might initially think. Why else would wealthy black people commit more crime than poor whites?
We all know that most black people have an extremely short fuse. They are ready to throw their life away over the smallest sign of disrespect.
I think natural inclination for violence is probably separate from IQ. I remember one study where some gene that makes people more violent was found to be much more prevalent in black people.
The warrior gene. I want to take a test and see if I have got it. Just for shits and giggles.
They need to call it the KANGZ gene.