In light of the little flurry of comments here on whether the murder of Anna Lindh proves anything about Swedish society, I decided to dig up some facts. While I am usually of the opinion that facts get in the way of a good debate, I suspected that in this case looking up some statistics might just lead to some enlightenment.
Specifically, I’ve been wanting to compare two indicators for Sweden and the US: incarceration rates and murder rates. America’s numbers are conveniently pored over in the current edition of The New York Review of Books, but I got a whiff of border-line data massaging going on in that article. Still, an interesting read, if one to lean into.
I’ve found a British Home Office document [PDF] that serves my purpose. It lists both indicators for a whole range of interesting countries. All I did was put the two series on perpendicular axes and voila, my scatter chartData is for the year 2000.:
Now, what does this chart tell us? Well, obviously that the US has both a higher incarceration rate and a higher murder rate. But we expected that. Lets look instead at the policy options available to each country’s government:
The orange lines represent the trade-off each country can expect between incarceration rates and murder rates. For example, if the US were to let half its prisoners go, it might have a homicide rate of 10 per 100,000 people per year, or nearly doubleThese are just ballpark figures, of course.. Now, let’s assume that both countries are happy with their spot on their respective policy lines P’ and P”. If you now look at the slopes of the lines drawn from the origin to each country’s position, you can clearly see Sweden is willing to tolerate more murders per prisoner than the US.
What if we implemented American policy preferences for crime fighting on Sweden’s level of crime? That would bring Sweden to point A on the chart. Incarceration rates would rise from the current 64 per 100,000 people to about 160. The murder rate would drop from the current 2.06 per 100,000 people per year to around 1.5. For a population of 9 million, that would mean forty-five extra people would be alive each year, but 9000 more people would be in jail.
If Swedish preferences for crime fighting were implemented in the US, we’d be at point B. US incarceration rates would drop from the current 685 (in 2000) to around 320, and the murder rate would rise from 5.87 per 100k to around 10. For a population of 290 million, it would mean 12,000 more people die each year, though there would be 1 million fewer prisoners.
There is of course another possibility: That people’s preferences are fundamentally the same, but that they are expressed differently depending on the crime rate. As the crime rate rises, people’s attitudes quickly harden, and the government’s stance on crime toughensOther interesting factoids from the report; Sweden’s homicide rate is a little higher than the EU average of 1.70 per 100k. Stockholm’s homicide rate, at 2.97 per 100k, is a little higher than the EU city average of 2.48. New York City’s homicide rate is 8.77. Pretoria wins hands-down with 41.1:
This would mean that Sweden and the US both have crime policies that are well suited for their environment. Swedes moving to the US do, over time, become tougher on crime, while Americans moving to Sweden tend to soften up. This approach lets both the Swedes and the Americans off the hook when it comes to toughness on crime. And it would let Sweden’s crime policy off the hook for Anna Lindh’s murder. But it does not explain why the US has much higher homicide levels in the first place.