The problem is that we are very easily manipulated primarily by the media and the environment.

Sometimes what the environment / media perceive as the truth we adapt also becomes our own truth. "But do we have logic to think?", Yes but man himself is very weak against logic and tend to be more easily controlled emotions. After all, human beings can find logic in whatever reason, they will use logic as best as it is not to seek the truth, but to "justify" the truths they already believe.

Unconsciously our emotions affect our point of view further than we imagine. That is why we are more likely to hate people whose media / neighborhoods we consider untrue, envy those who succeed in ways we think are unfair, and always find thousands of reasons why we are on the right path and those who are wrong.