ChapolinColoradoNZ

Here’s a source (with a link to a database of victims, some of which were victims of Che) article as a starting point:

https://www.humanprogress.org/the-truth-about-che-guevara-racist-homophobe-and-mass-murderer/

Here’s Castro himself saying it did happen under his regime:

https://www.bbc.com/news/world-latin-america-11147157

He mostly used that logic with homossexuals, not so much with fascists.