The shopping district is extremely crowded and a pickpoketing is common there. Even in shops. I was in Athens with my teenage daughter. We went in to Forever 21 shop. Few minutes after my rucksack was opened and wallet was stolen. I reported it to security guard but he denied help. He couldn't check CCTV, call the police or close the store although the thief was probably there. I went to report it to the police but they didn't do much as well. I assume that pickpoketing is common in Athens so they don't do anything to fight it.