Reagan's strong anti-communist position, evident from the time he began his presidential career, was highlighted in a 1983 speech in which he referred to the USSR as an "evil empire." The phrase became common in Cold War rhetoric and has since entered popular culture, taking on a nearly iconic status. It has been used in a variety of contexts to refer to entities as varied as Wal-Mart and the British Empire. Before what group was Reagan speaking the first time he used the phrase "evil empire"?
Source: US President Ronald Reagan Dubs the USSR an "Evil Empire" (1983) (http://encyclopedia.thefreedictionary.com/Evil+empire)