This guy I know, I've working with him in the same building for at least a year and a half, he sat down at my table in the staff cafe. He;s black. I was about to move my bag from the table to clear it off and I second guessed myself. Suddenly the liberal little voice that I normally thoroughly repress said, 'Ooh he might find that offensive. He might think you think he's a thief.' So I ended up moving it sround a bit but leaving the bag between us on the table.