Why differences in colour needed to get rights of survival

I had seen so many times that people who are from different countries never get their rights easily and they have to face so many difficulties to be the residence of the country. Nowadays we had seen so many incidents which is against the Asians especially Indians. I am writing because whenever I am looking on these types of news I got astonished that although we people are reciting that we all are one but still we have to face the monster face of the colour and society who are just ruining the love in between the people. Please sir sought this problem out otherwise we will see a world of destruction where no one let other to live. Hope this can be listened by you to think about the upcoming future which can be worst if not get resolved now. Thanks for hearing