"Graffiti is a feeling or emotion, but some art isn't really suitable in some places especially when younger children are about." - Harpreet, 13, London
"It is destruction." - Emily, 11, London
"It can be an art if it's expressed in the right way in the right place." - Graham, 16, Merseyside
"It's a creative expression, and it brightens up the city." - Chris, 16, Birmingham
"Graffiti should be allowed on the condition that it's done on allocated places, such as underpaths because they are so grey. I think they should make young people use this creativity in a positive way - by setting up graffiti projects and sharing ideas." - Irene, 17, London
- For more information on Young NCB visit www.youngncb.org.uk.