Dual South African/German citizen. Currently in Germany. Lived in the States (legal immigrant) for 11 years. Other countries I have lived in include Lesotho, Scotland, England, and Spain. And, of course, traveled quite a bit.
Okay, so here's the thing. People in different countries have different levels of kindness and consideration towards each other. In a country where competition for survival, it brings out the savage in man.
Most of mankind, when threatened , can become savage. That's because their lives are on the line. By the same token, given the right motivation, all people can also be kind and self-sacrificing and work towards a mutual goal.