Two horrific acts of murder took place in Europe this October, within a few days of each other. One was the stabbing of English MP David Amess by a UK citizen with a Somali heritage, Ali Harbi Ali. The other was the killing of five Norwegians by Espen Andersen Braathen, a Danish citizen. These two attacks were different in many ways. One targeted a public figure, a well-known politician, in a church; the other picked off random targets in a supermarket. One was a knife attack; the other was executed with a bow and arrows. What the attacks had in…