Street art: art or not?

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Across
  1. 1. to change the form of something; to change in form
  2. 3. to separate into parts; to make something separate into parts
  3. 4. to break without dividing into separate parts; to break something in this way
  4. 7. to show something in a public place for people to enjoy or to give them information
  5. 8. not receiving enough care or attention
Down
  1. 2. rude in a way that causes somebody to feel upset or annoyed because it shows a lack of respect
  2. 5. if the police arrest somebody, the person is taken to a police station and kept there because the police believe they may be guilty of a crime
  3. 6. a strong, hard metal that is made of a mixture of iron and carbon