individuality and culture, nothing is created exactly the same, the result? ...wide array of differences and inequality..that's how it is ...we just have to deal with it and don't let it creep to our own mentality and system as well..if there is a rotten apple in your neighbor's yard for sure there is one in your yard too..avoid stereotyping, if you do not want and know the feeling of being discrimated then don't do it to others otherwise karma will be waiting for you down the dark alley.