Should Bob Vylan be prosecuted? The British prime minister has criticised the musicians after they led chants at Glastonbury. Some are now calling for arrests; others disagree.
Furious row over anti-Israel chants
Controversial: Bob Vylan's frontman Bobby Vylan stood by his words at Glastonbury, posting online: "I said what I said." Glossary
Glastonbury - An English town known worldwide today for its yearly music festival.
Punk - A subculture centred around a loud and fast-moving type of music popular in the 1970s.
Bob Vylan - An English punk duo. The pair perform under the stage names Bobby Vylan and Bobbie Vylan to maintain privacy.
IDF - Israel Defence Forces, Israel's national military.
Israel - A country in the Middle East, and the only Jewish nation in the modern period. It is seen by Jews, Christians and Muslims as the Holy Land.
Row - Argument.
Hamas - A militant Palestinian organisation, which has controlled the Gaza Strip since 2007. It is listed as a terrorist organisation in the UK.
Antisemitic - Hostile to or prejudiced against Jewish people.
Prosecuting - Start legal proceedings against a person or group.
War crimes - Violations of the laws and customs of war.
Gaza - The smaller of two Palestinian territories, home to two million people. It is located on the Mediterranean coast, bordered by Israel and Egypt.
Free speech - The idea that people can say what they think without any fear of being punished or silenced.
Prosecuted - The start of legal proceedings that aim to prove that someone has committed a crime.