Answer:
PSA, propaganda, commercial, announcement, poster, flier, placard, declaration, promo/promotion, message.
Explanation:
PSA-A public service announcement is a message in the public interest disseminated without charge, with the objective of raising awareness of, and changing public attitudes and behavior towards, a social issue.
Propaganda-information, especially of a biased or misleading nature, used to promote or publicize a particular political cause or point of view.
Commercial-a television or radio advertisement intended to make a profit.
Announcement-a public and typically formal statement about a fact, occurrence, or intention.
Poster-a large printed picture used for decoration.
Flier-a small handbill advertising an event or product.
Placard-a poster or sign for public display, either fixed to a wall or carried during a demonstration.
Declaration-a formal or explicit statement or announcement.
Promo/promotion-activity that supports or provides active encouragement for the furtherance of a cause, venture, or aim.
Message-A verbal communication given to large amounts of people.
