-PJ
No, not the Ishmael in Melville.
Cho was referring to the wild woodsman Ishmael Bush and his sons the Bush boys, in James Fenimore Cooper’s novel THE PRAIRIE.
Read this for the reference to the axe - - http://external.oneonta.edu/cooper/articles/suny/2001suny-pikus.html
However, Cho did use a variant spelling of the name, an Islamic one. Interesting. Is the reference to a character surnamed “Bush” a coincidence? Is the “ax” or “axe” vengeance, cleansing, rage, violence, murder??? Who knows what he might have been thinking? Psychologists may ponder this for years to come...