This section does not limit the powers of the Administration under this subtitle or the Department of Juvenile Services under Title 9 of the Human Services Article. An agent, officer, or representative of a Maryland corporation formed for the care, custody, or protection of minor children who has care or custody of a minor child has the authority and privileges of a law enforcement officer for any purpose related to the objectives of the corporation. A person, including a person acting under claim or color of authority over a minor child as a parent, guardian, or otherwise, may not interfere with or obstruct an agent, officer, or representative described in subsection (b) of this section in relation to the care, custody, or protection of the minor child by the agent, officer, or representative. A person who violates this subsection is guilty of a misdemeanor.