Music festivals

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Across
  1. 3. Native American headdresses banned there
  2. 5. demand
  3. 8. challenge (v. )
  4. 10. a festival in California
  5. 11. without meat
  6. 12. the ruling class
  7. 13. concert
  8. 14. be present at something
  9. 16. come together
  10. 17. ... a message (transfer, transport)
Down
  1. 1. politically engaged/involved
  2. 2. a large group of people
  3. 4. opposite of dirty
  4. 6. environmental organization at Glastonbury
  5. 7. expensive
  6. 9. socialist section of a political party
  7. 15. standard by which sth is judged