Parking Spot is Taken

You have an appointment with a doctor in a crowded neighborhood.

You and your wife have just reached the location and also found a suitable place for parking. Another car is moving out from the parking lot and you wait to take the space.

While you wait, suddenly a car comes out of nowhere and parks in the just vacated space. You are angry. You notice that two heavy looking persons are in the car and preparing to come out.

Finding a second spot will take time and you will miss the doctor appointment. What do you do?