They played for dirty money in sun city , south africa

[City123]

But a lot of people went there when apartheid was the accepted status quo (Excuse the musical pun) so it wasn't seen as so bad as it is now in hindsight.
Plus of course there were parts of the USA that in reality weren't much better but still accepted.

The UN blacklisted Queen for playing there and the anti-apartheid movement was well underway, Sun City was built in 1979 and negotiations to end apartheid began just 11 years later.