We don't want to scare people off from coming to Barcelona. Writing about safeguarding your personal safety in Barcelona and how to ensure you are not pick pocketed or robbed may imply that the city is not safe. The city is very safe by all measurable standards. However it's true to say that there is pick pocketing and bag snatching in some of the tourist areas of Barcelona, especially around La Rambla Boulevard and nearby streets, as well as the metro.
So many times along La Rambla you see tourists with maps open, looking lost and with their bags unguarded. These tourists will almost certainly be noticed by all the wrong people and become immediate targets. There is no problem to be a tourist, but you are recommended to behave like a savvy tourist. In this way, you will be much, much safer.
Please take these simple precautions to safeguard yourself. We know you may think it will never happen to you. You may even think that "all big cities are the same in this respect". However, we recommend you take some simple precautions to ensure your visit is a smooth one.
For further information on security please check here: http://www.barcelona-tourist-guide.com/en/general/barcelona-safety.html.