My mom works downtown where a lot of theft goes on, and she parked her van right outside of her window, and the Kansas City Chiefs thing on the back of her car was stolen.
The security camera was blocked by a column, or they would have found out who did it.
Take it to a body shop. It really shouldn't be that much to get it touched up with paint, but the tire will (obviously) cost a little. Start parking your car in a different place where there are security cameras.
Good luck to you, I hate people who vandalize other people's cars and belongings!
Park it someplace different. You will probably have to take the car to the body or paint shop to get the side re-painted. As far as the vandals go, who knows. Just park the car with more security or someplace where the vandals will not have access.