The Northern Irish rap group Kneecap, which frequently makes anti-Israel and pro-Palestinian comments onstage, canceled its 15-concert tour of the United States on Monday amid a legal dispute in Britain. Liam Óg Ó hAnnaidh, a member of the group who goes by the stage name Mo Chara, was charged with a terrorism offense in May. He is accused of displaying a flag in support of the Hezbollah militant group at a concert in November. Hezbollah is considered a terrorist organization in Britain, where it is illegal to display the symbols of such groups. A chief magistrate said he would make a decision on Sept. 26 about whether Ó hAnnaidh would stand trial.