Article 257 — Provocation and Preparation.

Whoever, with the object of committing or supporting any of the acts provided under Articles 238-242,246-252: (a) publicly provokes them by word of mouth, images or writings; or (b) conspires towards, plans or urges the formation of, a band or group with other persons, whether within or outside the country; or (c) joins such band or group, adheres to its schemes or obeys its instructions; or (d) enters into relations or establishes- secret communication with a foreign government, political party, organization or agent; or (e) launches or disseminates, systematically and with premeditation, by word of mouth, images or writings, inaccurate, hateful or subversive information or insinuations calculated to demoralize the public and to undermine its confidence or its will to resist, is punishable with simple imprisonment, or where the foreseeable consequences of his activities are particularly grave, with rigorous imprisonment not exceeding ten years.