Football is rooted in love. As kids, we love the simple joy of the game, and as we grow alongside it we love how it melds with what we love – community, family and friends. Football is who we are. But where there are in-groups there are out-groups, and while as fans our antipathy to everyone who is not “us” mainly constitutes harmless fun … sometimes it doesn’t. The WhatsApp conversations of the Ashburton Army, a prominent Arsenal supporter group, were riddled with antisemitism that included references to Israel, the Holocaust and circumcision. Though I wasn’t surprised when I heard...