Maryland Code, Criminal Law § 4-208

(2)(i) “Demonstration” means one or more persons demonstrating, picketing, speechmaking, marching, holding a vigil, or engaging in any other similar conduct that involves the communication or expression of views or grievances and that has the effect, intent, or propensity to attract a crowd or onlookers.

(ii) “Demonstration” does not include the casual use of property by visitors or tourists that does not have the intent or propensity to attract a crowd or onlookers.

(3)(i) “Firearm” means a handgun, rifle, shotgun, short-barreled rifle, short-barreled shotgun, or any other firearm, whether loaded or unloaded.

(ii) “Firearm” does not include an antique firearm.

(i) a member of a police force or other unit of the United States, the State, a county, municipal corporation, or other political subdivision who is responsible for the prevention and detection of crime and the enforcement of the laws of the United States, the State, a county, municipal corporation, or other political subdivision;

(ii) a park police officer of the Maryland-National Capital Park and Planning Commission;

(iii) a member of the University System of Maryland Police Force; and

(iv) any military or militia personnel directed by constituted authority to keep law and order.

(6)(i) “Public place” means a place to which the general public has access and a right to resort for business, entertainment, or other lawful purpose.

(ii) “Public place” is not limited to a place devoted solely to the uses of the public.

(iii) “Public place” includes:

(i) the person has been advised by a law enforcement officer that a demonstration is occurring at the public place; and

(ii) the person has been ordered by the law enforcement officer to leave the area of the demonstration until the person disposes of the firearm.