|Wikimedia Commons does not accept fair use content. Fair use laws vary from country to country, and uses that are acceptable under US law, for example, may not be acceptable in many other countries with more restrictive rules.
Also, fair use is only applicable in a few limited contexts. The use of a media file in one context may be considered fair use, while the use of the same file in another context may constitute copyright violation. In particular, fair use does not extend to the collection and distribution of media files in a media database such as Commons. Therefore, Commons cannot legally rely on fair use provisions.
Non-free content that may be used with reference to fair use may be uploaded locally to projects which allow this.