An american assassination must be of an important political figure (House member, governor, ect.), of a another high profile individual I (should) have heard of before, or a cultural significant moment like the assassination of Brian Thompson. In resent years only the murders of Charlie Kirk and Brian Thompson would have counted. The murder of Melisa Hortman would not have counted. If there is a debatable case I might resolve N/a. Feel free to ask clarifying questions.