This is plainly wrong. Socioeconomic factors are not the major ones. Culture, habits and social conditioning in general are. People who do not share (or even comprehend) the shared values of other cultures have no respect to them and perceive others as "aliens". This works both ways. The cultural incompatibility and different social conditioning are the major factors.
Basically, well-educated people of any origin would behave more or less similarly, according to common shared values (or a subculture) while on the other side of the spectrum the differences could be huge and fundamental. One just have to call the things by its real names.
Basically, well-educated people of any origin would behave more or less similarly, according to common shared values (or a subculture) while on the other side of the spectrum the differences could be huge and fundamental. One just have to call the things by its real names.