A great talk on how our perspectives are formed and how dangerous it is. This is exactly why I sometimes cannot read the news. Imagine that you want to work in the field of international development and all you read is the disastrous stories... If you were to believe it's all just bad, you'd give up on trying to help people.
(Here is the TED link: Chimamanda Adichie: The danger of a single story | Video on TED.com)