Not sure what you mean by this. Prejudices can be based on previous experience, perhaps your experiences on your travels could lead to you developing some kind of prejudice. For example, if you went to India, and someone stole your bag, maybe you might be led to believe that all Indians are bad people. However I think that being well travelled can also teach a person a lot of things, and could possibly break down some prejudices that they might have previously held. Trying different things is a great way to get rid of prejudices that you might have had towards things you don't understand.