Are you really suggesting that a country full of white people is a priori superior to a diverse country? Do you realise how insanely racist that is? Can you back up your assertion that Norway's good record on recidivism is because of all the whites?
- desperate people will do desperate things to survive
- oppressed people are bound to lash out
- the poor are powerless against authority
- people in poorer neighbourhoods are prone to overpolicing
- destitute people are more likely to succumb to substance abuse
If he said recidivism or crime rates were higher because the population was black/hispanic/etc, that would obviously be racist.
I don't want to assume such a motivation for bringing it up, which is why in my own comment I just asked why it was relevant in a completely neutral way. But that got me no response.
That’s a cultural difference on display. Culture is not determined by race, so let’s not conflate the two. Culture is something you are immersed in and it does influence behavior.
There are also massive downsides to extreme cultural cohesion, looking at it another way.
But let’s not deny that social culture has a bearing on individual and group behavior. It has a massive impact. Conflating that observation with race or _racism_ seems a particularly unhelpful neuroticism of the US.