Actually Northern Europe countries are the most welfare and developed countries in the world with the highest per-capita income and HDI. They're also the safer countries to live in, the USA is always the target of terrorist attacks, but living in these third-world countries you don't have to worry about it.
We have ghetto too, shootings every day bombs weekly, they put all immigrants in the same area, gang wars light compared to the US ghettos. We don't get to hear about much through media but there are other source.. Some areas you dont go to unless life or death situation.