5- Dunkin Donuts Parking Lot with one of the Deputies - Penal Code 140

5- Dunkin Donuts Parking Lot with one of the Deputies
-§ 140.05. Trespass.

A person is guilty of trespass when he knowingly enters or remains
unlawfully in or upon premises.

The key word there is "unlawfully". What did I do to be in the premises "unlawfully" by standing there holding a flag.