Judas
Someone who sold out Jesus BECAUSE Jesus told him too, and Judas felt extremly guilty about it. Jesus told Judas to sell him out because he was going to die for everyone's sins. Judas did, and since he was overwhelmed with guilt, he hung himself. Now a few people hate Jews because ONE Jew sold out their savior. ALL of Jesus' desciphles were Jewish.
Judas wasn't a betrayer.