One man terrorist is another man's hero
If you ask people who were oppressed by Mao and Castro a like, they would say they are the evil, scum of all the man, in fact, I had a Chinese old man who lived three block down mine fled China to Australia used to know Mao personally (and his son know Ma - Taiwanese president personally, isn't it strange?) know in detail how Mao purge the people around him, he included. He hates Maos guts and in the end of the day, he don't understand why Mao was still honored in China today.
I also know people who got murdered and f..ked by Castro and they wonder why they were still worshipped.
People are like this, you hate someone you like and you will go around saying its wrong to worship someone. But in the end it's almost certain it's political more than anything else.