To Discriminate
する verb
差別 is discrimination. This is the verb version, to discriminate.
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.
どうして差別するんですか？
Why do you discriminate?
誰かに差別されたことはありますか。
Have you ever been discriminated against by someone?
無意識に外国人を差別してる人は多いんじゃないかな。
I think many people unconsciously discriminate against foreigners.