The title of Egyptian-born Canadian author Omar El Akkad’s One Day, Everyone Will Have Always Been Against This, succinctly lays out the thesis of the book: that those in the West who have facilitated the destructive cruelty of Israel’s war in Gaza, or remain silent about it, will in time declare they thought it indefensible all along.
El Akkad, whose bestselling debut novel American War recounted a future civil conflict in a…