Contraband consists of items of which possession may be illegal, depending on the variety and the country or the age or sex of the possessor. One can be punished for having such an item, even if one has paid for it, made it oneself, or is in possession of it without knowledge.
Mask - For example, in California no protester may wear a mask. The law was initially created to force members of the Ku Klux Klan to show their faces, but the same code was later invoked to prevent protesters from wearing gas masks.
Notes
There are often obligations related to possessions, such as paying taxes, and making sure they cause no danger or damage.
Even if a possession is legal, carrying it is not always allowed, e.g. alcohol within sight of a football pitch in England, and a weapon in many cases.
Plants taller than 8 inches in one's yard are not allowed in Elsmere, Delaware, (Newspaper articles) and grass and certain kinds of plants (termed "weeds") taller than that are proscribed by most municipal codes.
contraband, in international law, goods necessary or useful in the prosecution of war that a belligerent may lawfully seize from a neutral who is attempting to deliver them to the enemy.
The penalty for carrying contraband goods is the confiscation of the goods and often also of the vessel (see prize).
At the second (1907) of the Hague Conferences a vain attempt to define the classes of contraband was made.
35.Conditional contraband is not liable to capture, except when found on board a vessel bound for territory belonging to or occupied by the enemy, or for the armed forces of the enemy, and when it is not to be discharged in an intervening neutral port.
The ships papers are conclusive proof both as to the voyage on which the vessel is engaged and as to the port of discharge of the goods, unless she is found clearly out of the course indicated by her papers, and unable to give adequate reasons to justify such deviation.
41.If a vessel carrying contraband is released, she may be condemned to pay the costs and expenses incurred by the captor in respect of the proceedings in the national prize court and the custody of the ship and cargo during the proceedings.