When you're not nice to someone, they get unhappy. When that person gets unhappy, they often start to think they're a terrible person. When they think they're a terrible person, they berate themselves for not being good enough and think they are ugly and talentless. When someone thinks they're ugly and talentless, they get depressed. When they get depressed, they don't want to talk to anyone because they think they'll be mean. When they don't want to talk to anyone, they turn into social recluses. When they turn into social recluses, they get even more unhappy. When you try to cheer them up, they yell at you for everything. When they yell at you for everything, you yell right back. When you yell right back, they hate themselves even more.
Don't make people hate themselves. Be nice to everyone you meet. Be tactful. Stop stating your opinion if it makes other people second guess themselves or makes them look bad. If you think that you're better than everyone else, you're wrong. If you think you're worse than anyone else, you're wrong. Everyone is equal. If we sometimes looked we'd realize that. Think about it! Everyone loves days when there are no obligations, everyone enjoys it when they have their favorite drink and maybe a great dinner right there in front of them, everyone flinches ever so slightly when someone jumps out of the dark and yells "BOO!"
Little things? Maybe. Inconsequential things? Possibly. But it is the little things that make us who we are. And if it is the little things that make a human being, then isn't it safe to say that the little things are what make us all the same?
One thing is for sure. If you cut a human being, whether black or white, brunette or blond, sensitive or non-sensitive, happy or depressed, extroverted or introverted, tall or short, we all bleed the same.