In the film Examined Life, Kwame Anthony Appiah argues for the importance of being a "world citizen", and presents what he believes is the best way to become a world citizen.  

When we walk through an airport, we see more people then some of our ancestors saw in a lifetime.  While our ancestors could get away with possibly interacting with only the people that are "built-in" to their lives, such as family and friends, people today must deal with the challenge of not only caring for these people, but also caring for others on a global scale.  With so many people populating the world, especially with the limited resources we have, we can't live in our isolated bubbles anymore.  We're bound to interact, and the more pleasant and symbiotic these relationships are, the easier it will be for us to share our limited resources.  But how do we make these interactions pleasant and symbiotic, especially since many of the cultures we need to interact with are so different from our own?  

Many people approach it from a standpoint that their way is the right way, which belittles the people they are interacting with.  Another method, invented by Franz Boas, is using the idea of cultural relativism, or the idea that one must view people's beliefs through the lens of the culture they live in.  In other words, one should not judge the beliefs of others, until one understands their culture.  

In his talk, Appiah addresses two different kinds of cultural relativism.  One is a sort of laissez-faire attitude, in which everyone simply accepts cultures for what they are.  While this attitude does make interactions more pleasant, it does nothing to improve different cultures.  We all remain stagnant, because we don't even discuss our differences.  Appiah suggests a different kind of cultural relativism, one in which everyone is correct, in a sense, but the differences between us are also discussed.  The goal is not necessarily to change the other person, it's more an effort to understand, as well as be understood.  This method not only keeps most interactions with other cultures pleasant, it also encourages us as people to really look at ourselves, as well as take a good look at separate cultures.  Through this, both sides are more likely to improve, without the bullying mindset that some "my way or the highway" people would bring to these conversations.

I've always wondered how exactly to deal with cultures dramatically different from my own, especially dealing with things within the culture I may not agree with.  I feel like using Appiah's version of cultural relativism could be useful in these instances.  This way, the other culture feels respected, and I'm still able to introduce my views to them.  I think it also reminds us that our culture isn't perfect either, and can be improved by listening to what people of other cultures disagree with when it comes to our culture.  Hopefully, I can use this idea when interacting with people in I Have A Dream, since the way I grew up is so much different from the way they have.