Maryland Criminal Law Section 11-105
§ 11-105.
  (a)   A person may not knowingly display for advertising purposes a picture, photograph, drawing, sculpture, or other visual representation or image of an individual or portion of a human body that:
    (1)   depicts sadomasochistic abuse;
    (2)   depicts sexual conduct;
    (3)   depicts sexual excitement; or
    (4)   contains a verbal description or narrative account of sadomasochistic abuse, sexual conduct, or sexual excitement.
  (b)   A person may not knowingly allow a display described in subsection (a) of this section on premises that the person owns, rents, or manages.
  (c)   A person who violates this section is guilty of a misdemeanor and on conviction is subject to imprisonment not exceeding 6 months or a fine not exceeding $1,000 or both.