Why Statues in Portland Are Dressed in 'Ugly' Christmas SweatersYarn-bombing, a gentler form of graffiti, has come to Portland, Oregon, but this group of street artists is nothing like your grandma’s knitting club.Get more newsLiveonPrintDec. 4, 2014, 12:02 AM UTC / Updated Dec. 3, 2014, 10:10 PM UTC