In April, the Irish-language rap trio Kneecap performed two sets at Coachella, the California music festival attended by 250,000 people. As is commonplace at the group’s shows, Kneecap displayed a message stating: “Israel is committing genocide against the Palestinian people,” and the words “Fuck Israel. Free Palestine”. Mo Chara, one of the group’s members, told the audience: “The Palestinians have nowhere to go. It’s their fucking home and they’re bombing them from the skies. If you’re not calling it a genocide, what the fuck are you calling it?” Within a week, Kneecap’s US booking agent had dropped them, Fox News...