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, known for mixing grime and punk rock, tackle a range of issues including racism, homophobia and the class divide in their songs and have previously voiced support for Palestinians.

The Glastonbury Festival is making headlines for controversy rather than music. Little-known rap-punk duo Bob Vylan have drawn politicians’ ire and a police probe after leading a chant calling for “death” to the Israeli military.