Khuzwayo Joe Mlangeni along with four others were the first to be executed at the Pretoria Central prison for political reasons. This followed a clash at Cator Manor township outside Durban the previous year during the beerhall riots.
The prison was restored as a museum and launched as the Gallows Musuem in November 2011.
References
https://www.buanews.gov.za/rss/11/11110115451001https://www.dcs.gov.za/docs/landing/gallows/Gallows%20Final.pdf