A person who leave his/her place to explore out something or in emergency reaches to a new place known as Foreigner to that place. Sometimes he is in a search of some of his questions which are growing up in his/her mind since childhood like They speak same language or they follow same culture or the ethical and social issues in which he grown up are also present to other places or not !
Usually this term is only use for the person who leaves his own country and reaches to another country but in reality everyone who leaves his own native place is Foreigner.
When a person reaches to another place he observes the behavior of the natives of that place . Looks at the culture , social issues , language and much more. Make his own perception according to experience which he experienced through his journey. The perception may be good or ill but it becomes the introduction of that place to his place, his people because whatever we see , we make our assumption according to that.
So it is the responsibility of the natives to be good not only in front of them but also for everyone because then only it will become a habit. And Good habits don't come easily. Try to restrict the activities of ill behavioured people who spread mischievousness with everyone. Because then only we can stop one from making any ill perception against us.
By the way in our country we use to call " अतिथि देवो भव: " means Guest Is God. Then for us It becomes a great responsibility. And we without doubt treat our guest with love and affection but sometimes we also hear some bad news because of those ill behavioured people, We just need to stop them and everything will be much better than before.
Namaskaram !