What do you mean by unity in diversity?

Unity in diversity has a great and powerful message beneath it. It was first used as a statement or slogan to promote international relations. It represents that despite differences in races, we should accept each other with open arms as brother or sister equally. It has more applications now. Not just in race, it can be religion, gender, other cultures, beliefs, traditions. We should respect one another. There is no superior or inferior, or right or wrong.