It is a very sad fact that racism and xenophoby are deeply rooted in most cultures and races. It is the fear of the "unknown", and it persists in many forms all over the world, all the more when various cultures, ethnic diversity, religious beliefs or superstitions and ancestral mentalities are already the cause of long-lasting, severe local and regional conflicts, along with overpopulation, wide-spread poverty, diseases, pollution, violence, lacking resources and precarity. And other races are too often used as scapegoats.
https://en.wikipedia.org/wiki/Racism
https://en.wikipedia.org/wiki/Xenophobia
http://www.independent.co.uk/news/world/asia/racism-in-india-blamed-for-unrest-in-the-streets-as-african-migrants-claim-they-are-victims-of-9085426.html
https://en.wikipedia.org/wiki/Women_in_India
https://en.wikipedia.org/wiki/Caste_system_in_India
Sorry, no ethnicity and no system is ideal and the quest for decent living conditions, freedom, peace and equality is still an unrealistic dream for billions of oppressed or rightless people - of any race. If the rights of the local people cannot be respected, there are even less chances for refugees or immigrants trying to escape war, terror and famine.
In Europe:
http://www.pewglobal.org/2016/07/11/europeans-fear-wave-of-refugees-will-mean-more-terrorism-fewer-jobs/