Bob Vylan's career may be in trouble following their controversial performance at Glastonbury, experts tell Newsweek. Over the weekend, the English punk rap duo sparked outrage at the music festival in the United Kingdom. During their set, they led crowds in a chant of "death, death to the IDF," referring to the Israeli Defense Forces.

The prime minister is involved; so is the U.S. deputy secretary of State. The BBC is changing policies. But Bob Vylan remains steadfast.

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.