The differences among cultures often serve as barriers. These cultural barriers among the peoples of the world are perpetuated by the use of different languages, which limits the communication that is possible between two cultures speaking different languages. Barriers between understanding may even exist within a single culture due to religious, class, or ethnic differences. These barriers are also supported by language. However, the problems caused by these limitations can be alleviated by making people aware of them.
Language can perpetuate prejudices and prevent change.
Just as language can be used to instigate change, language can be used to prevent change. Again, the women's movement in the United States provides an example. Often, the speaker is unaware that he is communicating a prejudice because it is hidden within the message itself. For example, an individual may simply want to communicate the job opening for a police officer to the public. Language can convey a message other than the one intended.