I think the answer to this question depends on the situation. If someone is writing a story based on someone else’s experiences they have every right to unless that person is against it or if they are revealing any personal information of that person, such as the name, etc. If someone is writing a story based on a group of people from a different culture, I feel that then they would have to have some relation with those people, maybe by going and staying with those people for a while and interacting with them. But if someone chose to write a story about a different culture of people, without any relation to them, then I feel it is not right to do so because they may be making things up about those people without realizing because they would have read it on the internet or heard it from a friend and they  would have no proof. It is like ‘Judging a book by its cover’ and I feel this is unfair to those people because they are being judged by someone who has never met them and has no relation to them. To conclude I believe that every person has the right to tell another person’s story only if they have their permission or if they have some relation/ experience with them.