Look out for pickpockets - one trick is to hop on the metro, stand in the doorway (look confused) whilst 2-3 conspirators close in behind and go through you stuff as you try to get by before the doors close (when they make a fast exit and you're minus your valuables). Similarly crowded trams can be a problem and notices warn the unwary.

metro tram buses

I agreeI disagree

1.  
2. Send to friends