There are around 4000 different religions in the world today. Throughout history, there have been many, many more. There are also many different political ideologies. People with all these various religions and ideologies are at odds with each other, which results in wars and hostility.
There are also many different private belief systems. And all people are convinced that they have it right.
Some people are convinced that they are superior to you, and some are convinced that they are inferior. Some worship the golden calf, and some worship baloney.
Pluralism is the belief that all people must be accepted in society regardless of their beliefs. However, if your beliefs are too different from mine, we can not become too close friends. Then, we belong to different tribes.
Romeo and Juliet came from two feuding families. Their love story did not end well. Love is not a force strong enough to win over bigotry.