They give people with color a hard time. «A Jew should and must make false oaths when the Goyim(all non-jews) ask if our books contain anything against them –Szaaloth-Utszabot, The Book of Jore DIa 17 «A Jew may violate but not marry a non-Jewish girl» –Gad, Shas. 2:2 «If a Jew finds a object lost by a Goy(All Non-Jews) it does not have to be returned» –Baba Mazia 24a «If a Jew murders a Goy(All Non-Jews) there will be no death penalty» –Sanhedrin 57a «If you eat with a Goy(all NON-jews) it is the same a eating with a dog» –Towpath, Jebamoth 84b