Should Bob Vylan be prosecuted? The British prime minister has condemned the punk rock duo after they led chants at Glastonbury. Some are now calling for arrests; others bitterly 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
JS Mill - John Stuart Mill (1806 - 1873) was an English thinker known for his liberalism.
Bob Vylan - An English punk duo. The pair perform under the stage names Bobby Vylan and Bobbie Vylan to maintain privacy.
Glastonbury - An English town known worldwide today for its yearly music festival.
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.
Nuremberg Rally - Annual Nazi rallies held in the 1930s in Germany.
antisemitism - Showing hatred or prejudice towards Jewish people.
Mandatory - Compulsory.
Gaza - The smaller of two Palestinian territories, home to two million people. It is located on the Mediterranean coast, bordered by Israel and Egypt.
NGOs - Non-governmental organisations, such as charities or political campaign
Apartheid - A system of legally-enshrined racial discrimination and oppression which existed in South Africa from 1948 until the 1990s. It denied non-white South Africans basic human rights.