It typically uses standard public relations techniques and one-sided presentation of an argument.
In some languages the word "propaganda" does not have a negative connotation.
For example, the Russian word, propaganda (пропаганда) has a neutral connotation in some cases, similar to the English word "promotion" (of an opinion or argument).
Jacques Ellul, in one of the major books on the subject of propaganda, Propaganda: The Formation of Men's Attitudes, mentions white propaganda as an acknowledgment of the awareness of the public of attempts being made to influence it.
In some states there is a Ministry of Propaganda, for instance; in such a case, one admits that propaganda is being made, its source is known, and its aims and intentions are identified.