I don't think that comparison is fair. Europe is an advanced, civilised and homogeneous place; Somalia and the US are nothing like that (for different reasons)
It's an absolutely fair comparison. Remember, it wasn't that long ago that all of Europe was unimaginably barbaric by modern standards. Literally millions of people were put to death in gruesome ways for crimes we'd consider trivial (or not even crimes) today. And yet, the murder rate dropped right along with the end of absurdly draconian punishment.
Moreover, the violent crime rates for many parts of the US are no higher than in Europe. Coincidentally, those places tend to be the same states that have ended capital punishment.
Now, I'm not drawing a causal relationship between draconian punishment and an increase in crime. I'm just saying there's demonstrably no relationship between "tough on crime" harsh sentencing and a decrease in crime. Fear of violent retribution by the State is not what stops people from committing crimes. We have to look at other reasons.
Moreover, the violent crime rates for many parts of the US are no higher than in Europe. Coincidentally, those places tend to be the same states that have ended capital punishment.
Now, I'm not drawing a causal relationship between draconian punishment and an increase in crime. I'm just saying there's demonstrably no relationship between "tough on crime" harsh sentencing and a decrease in crime. Fear of violent retribution by the State is not what stops people from committing crimes. We have to look at other reasons.