Factoid: The noun "assassination" first appeared in print in Shakespeare's Macbeth.
However, forget that. The puzzle is to reproduce the following ngram.
The correct answer will be a link to the Google ngram website. On following the link, the above graph will be reproduced exactly. Of course I have edited my version of the image to conceal the search term I used. On following your link, the text-box will be shown filled in, thus creating the graph. All other parameters are shown exactly as I submitted them.