For instance , Dave Cole is a contemporary sculpture artist who practiced knitting as graffiti for a large - scale public art installation in Melbourne , Australia for the Big West Arts Festival in 2009 .
Yarn bombers sometimes target existing pieces of graffiti for beautification .
Dave Cole is a contemporary sculpture artist who practiced knitting as graffiti for a large - scale public art installation in Melbourne , Australia for the Big West Arts Festival in 2009 .
Yarn bombers sometimes target existing pieces of graffiti for beautification .