The Mandela effect (where people think they remember Nelson Mandela dying i prison) is likely because they confuse him with Stephen Biko, another South African anti-apartheid activist which died in prison. Biko was a cause celebre at the time, a movie was made and Peter Gabriel wrote a song about him.
> Other examples include memories of the title of the Berenstain Bears children's books being spelled Berenstein,[16][17] the logo of clothing brand Fruit of the Loom featuring a cornucopia,[18] and the existence of a 1990s movie titled Shazaam starring comedian Sinbad as a genie.