What persuasive strategy does the phrase "Keep America Clean" represent?

The phrase "Keep America Clean" exemplifies a call to action because it encourages individuals to take specific steps toward a goal—in this case, maintaining cleanliness in the environment. This type of persuasive strategy motivates the audience by invoking a sense of responsibility and urgency. It seems to state a clear action that people should adopt, aiming to inspire them to change their behavior for the betterment of their community and country.

Calls to action are effective in propaganda because they not only create awareness about an issue but also compel individuals to participate actively in addressing it. By using direct and impactful language like "Keep America Clean," the strategy emphasizes personal and collective involvement in fostering a cleaner environment, making it a prime example of how language can be powerful in persuading others to act.