An Anglo-American audience is a mixed blessing for an Irish artist. Pro: you get their money. Con: their opinions, too. The Irish hip-hop trio Kneecap have exploded in popularity since last year’s film about them. They now have less time for Irish-language poetry events in Dublin. They have also attracted international controversy, which they say is a bad-faith reaction to the pro-Palestinian solidarity they have been expressing in Ireland for years without a problem.