Just one thing i've realized by looking at streetshots or documentary of people. There are photographers who think because they took a photo of someone, they can tell their story.
I think you should be careful with that. If you take photos of strangers, then leave it with that. I'm not saying that it's not interesting to interprete and let your mind imagine possible stories of people. That's a good thing. Just don't give someone a story or judge how someone feels as an author, just because he/she is in your frame.
Sometimes it just seems that the photographer tries hard to make a bland photorgaph more striking and the situaton seem more important and special by inventing a story or emotionalize by using strong words to make the viewer connect with the person - but for me that's just distressing.
I've seen a lot of people doing this and getting good feedback for their way of interpreting things and capturing life, which is obviously good feedback for judging foreigners and putting these in different contexts and stories.
Of course it's not something we only find in photography. It's in all of us but it just shows when we talk about foreigners like that. It's a sensitive topic.
Taking photos of strangers doesn't give anyone the power or position to judge and when you have a boring photo, inventing stories and using strong words to emotionalize are signs for weak photographic qualities and overestimation of one's own capabilities.