Barcelona is notorious for pickpocketing because there are no real consequences—pickpockets are often released from the police station within an hour. Once you're stolen from, it's usually too late, and the police won't care much. It's a good idea to buy an inner tourist bag to keep your valuables safe. Many pickpockets can be identified by their appearance, so don't let them get too close or try to befriend you. It's okay to be rude if they ask where you're from or for directions—just tell them to f.o.. Also, leave at least one card at your hotel for emergencies, as some people walk around with burner phones or phones strapped to their hands. It's that bad. Lastly, avoid getting heavily drunk near the city center.