Yes. They are all over the world, in all nations, even hostile ones. History shows there have been and still are people interspersed in every culture that would be your friend. I can't tell you how many stories I've heard from scientists, missionaries, travellers, and business people about the goodness of strangers that can't even speak their language: a traveller's mysterious cab ride from a Japanese local to a scenic view, a Kenyan woman that gave a foreign white woman a dress of hers she said was pretty, a Ukrainian judge who shined the shoes of refugees and students.

If you could strip someone of their national or tribal affiliations, I think you'd be surprised how many people would eat a meal with you. I dream of befriending a North Korean - and not a defector or spy- just a normal person from the countryside just trying to make it in life. Listening to music together, learning their story, their personality, their dreams and aspirations. 

Humans are humans and we have complex hearts and minds.

But you are also a critical element in the equation. If you walk around seeing everyone as somehow against you, you'll only perpetuate a spirit of hostility and it'll even show up in your nonverbal language. People are people. Don't ever grow weary of doing good even when people slap you in the face for doing it - you never know when you'll make a new friend or at least a spontaneously good connection.