Mandella was a communist murderer who was tried and convicted of murdering police officers. He was devote and unabashed cut throat Communists and South Africa is in total shamble now , That is beyond question.
Ideologically there is not much difference between Mandela and Obama. The biggest differences are that Mandela actually did evil stuff where Obama just incites it among his minions and that Mandela wasn’t muslim or a homo as far as I know.