Who created the notion that if you do not say Hi to someone you pass by, then, you do not like that person?

If someone say Hi to other person female or a male then they think they are safe to be around that person. If they do not say Hi to that person then, they automatically think the negative of saying Hi is not saying Hi -is not being friendly-is mad, is angry, is a criminal, bad guy, disrespectful, untrustworthy and so on. If all of these is true, then, why don't that person who is expecting other person to say hi say hi the first time if that is expected of other person? is this a pride issue in America? Is this the superiority issue in a culture? What if 2 different cultures who are superior in their society? Who has to say Hi first?