This is a list of familicides that occurred in the United States. Being part of the list of rampage killers, the latter's terms of inclusion are also applied here. A rampage killer has been defined as follows: A rampage involves the (attempted) killing of multiple persons least partly in public space by a single physically present perpetrator using (potentially) deadly weapons in a single event without any cooling-off period. This list should contain every case with at least one of the following features: All abbreviations used in the table are explained .