What’s your opinion of Nelson Mandela? The man wrote a book(although a revision of another book) called “How to be a good communist” and the very first line of that book is:

A Communist is a member of the Communist Party who understands and accepts the theory and practice of Marxism-Leninism as explained by Marx, Engels, Lenin and Stalin , and who subjects himself to the discipline of the Party. (See notes 1, 2, 3 & 4)