I only know of him what I've read in the media. Undoubtedly he was a great man for his fight against apartheid but people tend to forget in his early life he was a terrorist, in the 1960s the ANC began to advocate violence, and Mandela was made the commander of its armed wing.
He was arrested for sabotage and sentenced to life imprisonment in 1964, he was released in 1990 after 27 years in prison.
One mans freedom fighter is another mans terrorist.