That is the argument, wasn’t is, that the assimilationists always gave, that everything would come out in the wash, or in the salad mix, or whatever cute metaphor was employed:
https://www.amren.com/news/2019/09/report-migrants-children-are-more-likely-to-commit-crimes-than-parents/
https://voiceofeurope.com/2019/09/report-migrants-children-are-more-likely-to-commit-crimes-than-parents/
“A recent study conducted by Statistic Norway has revealed that the children of immigrants commit more crimes than their parents – first-generation immigrants – do, suggesting that the notion of integration is merely a fantasy. Figures from the study showed that Norwegian-born men with Somali family background in the age group 15 to 35 were 4.6 times more likely to have committed a violent crime. Furthermore, men in the same age group with Iraqi backgrounds were 4 times more likely to have committed a violent crime. And again, the same pattern can be seen in Moroccan Norwegians (3.2), Turkish Norwegians (2.8), and Pakistani Norwegians (2.4). For members in Norway’s rightist Progress Party, these figures clearly indicate that proper integration is not taking place and that the Norwegian government should take more action and “make more demands” to address the problem. Sigmund Book Mohn of Statistics Norway told the Swedish newspaper Aftenposten, “There are significantly higher rates among immigrants for certain types of offenses, such as mistreatment in close relationships. And significantly lower for other types, such as embezzlement.” Jon Helgheim, the Progress Party’s integration spokesman said that this essentially means that “integration doesn’t happen automatically over time”. “From 2015-2017, a total of 443 people were charged with “mistreatment in close relationships”, including domestic violence. Of those 443 individuals charged, 185 of them were immigrants. This clearly points to significant over-representation.