The rap duo's frontman, Bobby Vylan, led the crowd in chants of "free, free Palestine" and "death, death to the IDF."

U.S. State Department bans visas for rap-punk duo Bob Vylan, following controversy over 'death to the IDF' chants during the group's Glastonbury performance.

Organizers of the Glastonbury Festival said Sunday they are "appalled" by the onstage statements of the punk duo Bob Vylan, whose singer led the crowd in a series of chants including "Death, death to the IDF" and "Free Palestine" the day before.