People who follow Judaism only follow the Old Testament, and they believe the Messiah has not come yet. People don't generally hate them, though Muslims historically dislike them.
Jews believe in one G-d. In other words, they are a monotheistic people. They have been persecuted throughout the years. Jews and Arabs haven't been getting along since their very beginning. They descend from brothers.
Jews believe that they are God's chosen people. Since antiquity they have held themselves apart and thought of themselves as having a special covenant with God, which some find frightening.
