Following their controversial chants at the Glastonbury music festival, English punk-rap duo Bob Vylan are not allowed to perform in the U.S.

Bob Vylan led crowds in chants of "free, free Palestine" and "death, death to the IDF" at the English music festival Saturday.

During the Glastonbury performance, which is aired annually on BBC, one of the group’s members, Bobby Vylan, led the crowd to chant, “Death to the IDF,” referring to the Israel Defense Forces, to the shock of organizers and onlookers.