No surprise - there is a reason so many middle eastern and African countries have ongoing internal strife and civil wars - so many groups/clans/tribes/sects who hate each other, simply for different religious views/interpretations, cultural and ethnic differences and historical enmities, sometimes stoked and financially backed by external powers, such as Iran, Saudi Arabia, China, and (unfortunately) western countries for their own political, religious, military and/or economic purposes. These hatreds don't go away just because a person moves out of the region.
I've always been amused that the left who see inherent racism and white supremacy in the most innocuous things, have failed to notice the inherent racism and cultural superiority complex in thinking that by bringing people from other parts of the world and exposing them to our predominantly European/Anglo (with elements of Christian values included) values based societies, those people will just leave all their historical baggage behind.