The <a href="https://en.wikipedia.org/wiki/Screen_Actors_Guild" id="mwzw" rel="mw:WikiLink" title="Screen Actors Guild">Screen Actors Guild</a> implements an anti-<a href="https://en.wikipedia.org/wiki/Communism" id="mw0A" rel="mw:WikiLink" title="Communism">Communist</a> loyalty oath.