The Jews themselves are anti-semitic. Jesus was a Jew. His blood is on their hands, their words, recorded in scripture:
.
Matthew 27 (Douay-Rheims 1899)
22 Pilate saith to them: What shall I do then with Jesus that is called Christ? They say all: Let him be crucified. 23 The governor said to them: Why, what evil hath he done? But they cried out the more, saying: Let him be crucified. 24 And Pilate seeing that he prevailed nothing, but that rather a tumult was made; taking water washed his hands before the people, saying: I am innocent of the blood of this just man; look you to it. 25 And the whole people answering, said: His blood be upon us and our children