If we were to examine the mindset of human beings, we would immediately know that people don’t think 100% alike; we may have similar interest in certain areas, but we have different interests and beliefs when it comes to certain things. For example: Richard and Darryl have been childhood friends; they like the same sports teams, but their taste in Literature is different. Richard likes Emily Dickinson and Darryl is fond of Pablo Neruda. The two are always having fierce debates in regards to who is the better poet.
I have seen with my own eyes the way some people treat those who have different political and religious views than them; they would look at those people as though they are insane or stupid. Some have even taken it to another level by inflicting violence on those people who adhere to different viewpoints.
The reality is: people will always have views that differ from our own. But, the problem starts when some of us makes a personal decision to start a war against all those with opposing beliefs.