This you will not want to read but should read

One of Us: Anders Breivik and the Massacre in Norway - Sarah Death, Åsne Seierstad

Pretty much what the title of the post says.  This is in-depth look at domestic terrorist attack in Norway in 2011.  Seirstad looks at both those who were killer and the killer.  At points you want to weep.  But considering Trump's popularity,among other things, it needs to be read.