The great enemy of peace is ego. Ego makes you judge others and think about them in an unkind way. It makes you force others to do what you want. Change your ego by change the way you judge people:
Here are some points to be considered:
2- Physical appearance is not everything. Don't judge people by their looks. A person in normal clothes and in a normal vehicle might be better than a person in brand new Mercedes or BMW. On the contrary, a rich man can also be equally a great person.
3- When judging people look for the Ethical richness such as honesty, truthfulness, simplicity, behavior, friendliness, down-to-earth attitude etc.
4- A fly will always sit on the dirty and rotten part of the tomato. Never do this in your life. Every person has good and bad habits. Look at the positive side of things. If you feel something wrong, talk about it but don't spread negative info about someone. Hate the bad habit, not the person.