Banksy

2. a trick that is played on somebody as a joke
6. causing disagreement or discussion
10. known by many people
13. a person who buys goods or a service
14. someone who collects things
15. to emphasize something, especially so that people give it more attention
16. a border that surrounds and supports a painting

1. large painting made on a wall
2. a picture that has been painted
3. a public sale in which things are sold to the person who offers the most money for them
4. to show something to people
5. a work of art
7. a thing that happens, especially something important
8. made or done by someone whose name is not known
9. to express disapproval of someone or something
11. costing a lot of money
12. to buy something