Tbilisi is arguably as safe as many European cities. There are pickpockets and theft does occur, but it is not a common happening. Just be streetwise, don’t carry lots of cash and don’t be too obvious with the money you do have on you. In essence, the locals are usually friendly and welcoming. Georgians can be impulsive and loud and you may encounter passionate arguments. Usually they are just barking at each other, but be sensible, and stay clear. Generally, foreigners are seen as a valuable asset and you are unlikely to encounter any problems. If you do have any encounter with crime, the police are usually friendly and helpful. Police corruption in Georgia is incredibly rare.