Today's top links (about violence)

Malcolm Gladwell fans will be pleased to see he is back in the New Yorker after a long break, with a characteristic take on criminal profiling.

Via the Freakonomics blog, Clive Thompson reveals how he became a suicide bomber—but only in Halo 3.

Despite being thoroughly sick of the phrase "rivers of blood," I never realised before that it (sort of) comes from the Aeneid. Mary Beard explains.