Hostility towards minorities can be contagious. Inter-ethnic conflicts often escalate surprisingly quickly. In a recent study, researchers have investigated the influence of the environment on peoples' hostility against minorities with the help of experiments. They found that hostility towards members of other ethnic groups is much more often imitated than hostility towards co-ethnics. Source 5g.
I do not understand the hostility that others have against minorities. I am friendly to everyone and have n issue with people unless they have a issue with me. I believe we all are on this earth together and we need to work together to make this world a peaceful place. Violence against someone who is different in you is not right in any case. Everyone is different for another so where do you draw the line?