I live in Ireland with my daughter and we have both suffered from racism. My daughter could not find any friends at all at school or in our area for several years just because she is Eurasian! She comes home and cries at times. I think the reason for its racism and the taboo about speaking about it openly comes from the fact that Ireland is an island which did not have many immigrants or refugees until the 1990s. So when there was a huge attraction, racism developed quite "naturally".
Parents are the culprits here as they are very closed-minded and teach indirectly this behaviour to their kids. Some parents are so proud of their country that they obstinately refuse to eat even food from other country and judge these food not their liking.
There are many other examples, but I don't want to write too long an answer.