So, I was a watching a tv show about Cuban immigrants in US called "One day at a time". In that show, when an American wears Che Guevara t-shirt, the Cuban family gets offended and compares it to wearing a shirt with Hitler’s image on it in a Jewish family’s home. And they add "He burned books, personally he banned music, he personally oversaw executions, he’s a mass murderer!".
Link for more context : One Day at a Time Calls Out the Che Guevara T-Shirt in One Perfect Scene
Hopefully someone will give a direct answer, but in the meantime, this response from /u/ainrialai tackles the topic of Che and murder and covers some of what you ask by discussing the cultural memory of Che.