(http://www.neighborhoodscout.com/neighborhoods/crime-rates/t...)
So, I'm thinking, branchless' thought process probably goes something like this... "If Chicago is this bad with crime and corruption... what must the rest of the US be like???"
Having mentioned that, other people are correct as well to point out that not ALL places will have the same level of corruption. Many, many places have far more corruption and crime than Chicago. And many, many places have far less corruption and crime than Chicago. But if you are from Western Europe, the mean level of corruption here in the US may be discomfiting to you.