This is Cuscuta californica (a kind of Dodder) a.k.a. devil's guts, devil's hair, devil's ringlet, goldthread, hailweed, hairweed, hellbine, love vine, pull-down, strangleweed, angel hair, and witch's hair (source). I've only hear it called Devil's Hair in the past, a name that makes me think of the Beck song, "Devil's Haircut," and I wonder if the plant's name triggered the song. Beck says it's a song about vanity, beauty, materialism, greed, etc. There's that part about "... rotten oasis / stealing kisses from the leprous faces." Devil's Hair is a parasitic plant that literally sucks life from the plants it grows on. Good metaphor, intentional or not.
Walking my dog up New York Ave. near my house, I thought, "interesting spray painting by the utilities guys." Went back, took pictures, and found out later from the next-door neighbor whom we'll call F.F. that this had been the site of an accident in which my across-the-street neighbor, who uses a wheel chair since his bout with Meningitis, was hit by a car. The driver fled the scene. My neighbor, fortunately, was not badly hurt, but after reading the article, I know not how.