A street art portrait of Prince Harry, Duke of Sussex, has made an appearance on a street in Los Angeles.It features the duke in a blue hoodie that reads, "Keep Calm and Wash Hands."Harry and Meghan, Duchess of Sussex, are reportedly self-isolating in a "secluded compound" in the city after moving from Canada's Vancouver Island.Graffiti saturates the urban cityscape of sunny Los Angeles, swarming highway walls, apartment buildings, billboards, and even occasionally the famed Hollywood sign.