A slogan is a memorable phrase used in political or commercial context as a repetitive expression of an idea or purpose.
A political slogan generally expresses a goal or aim ("Workers of the world, unite!"), whereas an advertising slogan is most often intended as a memorable identifier ("The real thing").
Slogans vary from the written and the visual, to the chanted and the vulgar. Often their simple, rhetorical nature leaves little room for detail, and as such serve perhaps more as a social expression of unified purpose, rather than a projection for an intended audience.
Slogans are attractive particularly in the modern age of informational bombardment from numerous media sources. Slogans are a core part of propaganda.
"Slogan" comes from sluagh-ghairm (pronounced slogorm), Scottish Gaelic for "battle-cry" , as in the popular movie Braveheart.
Additionally, the slogan's vagueness makes disagreement unlikely; and that is fortunate for the ceremony because the expression of dissension on such occasions would be inappropriate.
It is not an example of sloganeering because options are explored rather than obscured.) It is possible for many other forms of language to be slogans in a particular context, just as it is possible to ask a question without employing an interrogative sentence form.
Slogans are used in ceremonial and non-ceremonial contexts.