When you draw or paint in public, people become curious. Whether working in a café, or in a waiting room at an airport, or on the corner of a street, you attract onlookers. I've been menaced by street thugs in Barcelona, but encounters with onlookers are usually pleasant. Sometimes sad, such as meeting a woman one morning in Valencia. I was drawing the decrepit husks of vacant apartment buildings that were about to be demolished. She told me that the 3rd floor flat of the building I was drawing had been her home. After the structure had been condemned by the city, she had been forcibly evicted by the police. They threw me out onto the street, she told me, "con golpes y patadas," with punches and kicks.