s 20 Prohibition of printing, sale, etc., of documents and publications
20.—(1) Where it appears to the Minister charged with the responsibility for printing presses and publications that any document or publication —(a) contains any incitement to violence; (b) counsels disobedience to the law or to any lawful order; (c) is calculated or likely to lead to a breach of the peace, or to promote feelings of hostility between different races or classes of the population; or (d) is prejudicial to the national interest, public order or security of Singapore, he may by order published in the Gazette prohibit either absolutely or subject to such conditions as may be prescribed therein the printing, publication, sale, issue, circulation or possession of such document or publication. (2) An order under subsection (1) may, if the order so provides, be extended so as —(a) in the case of a periodical publication, to prohibit the publication, sale, issue, circulation, possession or importation of any past or future issue thereof; (b) in the case of a publication which has or appears or purports to have issued from a specified publishing house, agency or other source, to prohibit the publication, sale, issue, circulation or importation of any other publication which may at any time whether before or after the date of the order have or appear or purport to have issued from such specified publishing house, agency or other source.