A massacre is an indiscriminate killing and is of little spiritual value except to alert us to the violence of others’ belief.
Psychological / emotional perspective: Indiscriminate killing in dreams suggests that emotions have been allowed to get out of control and taken over from reasonable behaviour.
Material aspects: In mundane terms, when business methods become both heartless and ruthless this can be translated into dreams as a massacre. This may also suggest that there is little we can do personally to prevent this. You might like to consult the entries for death and kill.
To dream of a massacre implies that you prefer to go along with the beliefs and opinions of others. You should be more assertive and express your individuality.
Witnessing a massacre in your dream suggests that you are a follower rather than a leader.
To witness a massacre in one’s dream suggests that the dreamer is a follower who will follow the ideas of others without question or hesitation.