Well, the possible motive might be a perceived wrong that was never righted. The consequences? Not only legal trouble but also the psychological toll it takes on the person. They might live with guilt and remorse even if they initially thought it was justified.
It could be revenge. Maybe someone was wronged in the past and saw murder as a way to get even.
One possible motive could be his intense hatred for the wizarding world. Since Harry represents that world to him, he might murder someone he believes is part of the magic that he despises so much. Another motive could be fear. If he feels threatened by a magical being or situation, in his panicked state, he could resort to murder.
It could be revenge. Maybe someone had a grudge against her and decided to take extreme action.
Power and control within the family could also be a motive. One sister wife may want to be the dominant figure and see another as an obstacle, so she resorts to murder to assert her authority.
One possible motive could be jealousy. If the innocent person had something that others desired, like a relationship, a job opportunity, or property, it might lead to envy and ultimately murder.
Jealousy can be a big motive. For example, if one student is getting all the attention and good grades, another student might be driven to murder out of envy.
One possible motive could be financial gain, like in the case where a family member wants to inherit money or property. For example, if a person is in debt, they might think murdering other family members who stand in the way of the inheritance will solve their problems.
Possible motives could include revenge. If someone felt wronged in the past, they might seek vengeance through murder.
One possible motive could be greed. For example, if a player has a lot of valuable items or gold, other players might murder them to steal those possessions. Another motive could be revenge. If two players or guilds have a feud, they may target each other's members for murder. Jealousy can also be a motive, like when a player is jealous of another's achievements or status in the game.
One possible motive could be money. Maybe there was a financial dispute among members or between a member and the club management.