The most common form of hate we see in Twilight is actually self-hate. Edward hates himself for the danger he brings into Bella's life, and he frequently expresses horror at his bloodlust. Remember how Edward considers himself to be a "monster"? Some of the other vampires with a "conscience" also experience moments of self-hate, particularly Rosalie who is jealous of Bella simply because Bella is human. Other examples of hate crop up when Edward fears for Bella's safety. Edward hates any being – human or vampire – that threatens Bella, including the alley thugs that Edward has to talk himself out of killing, and James, whom Edward wishes he could have joined in on killing.