Akin to a catchphrase or slogan, taglines give your audience something to "take away" from your PSA and act on later.
The best taglines are
long-lived (people remember them long after they are no longer broadcast
original (people think of a specific cause or company when they hear them, they can't be reused)
relevant (they connect culturally to the audience)
Create a Tagline
Printable | Google Doc
This useful graphic organizer will help you develop a tagline that is simple and hard to forget.