Unfortunately children usually learn how to discriminate and judge others from their families, neighbors, media and finally school. It’s inevitable as we’re attacked by stereotypes every day from every side. People are scared of the unknown and usually they’re not keen on the idea of learning about it.
Personally I don’t remember any situation where I was a victim of discrimination, but some of my family members have quite stereotypical opinions and unfortunately we tend to argue about that a lot. To be honest, I think that they represent thinking of many Poles and getting rid of these prejudices is extremely hard, taking into consideration the mentality of our country.