Live Aid
In 1984, Queen performed in South Africa during the time of the Apartheid, which created a stir of controversy as most artists were boycotting the country because of the policy. But Queen’s concert did wonders and erased and ill-will that was felt and their performance at Live Aid a year later, where their set was one of their highlights.
Source: ultimateclassicrock.com
Some other facts: when Mercury moved to England in 1959, he lived less than a football field distance from Brian May, but the two future band members and friends never met until 1970. Here’s another tid bit of trivia: Queen proudly declared that they never used synthesizers in their music until 1980.