Chinua Achebe was a Nigerian novelist. He had a title of chieftain of Igbo tribe and wrote novels about its customs. That was portrayed as sophisticated, passed down through generations.
Westerners may mistaken them as ‘primitive and savage’. But Achebe showed Igbo people's rich cultural background through his narrations. Igbo proverbs, ‘the art of conversation", were frequently quoted in his novels.
The non-violent nature of Igbo was demonstrated by events like the peaceful agreement with the Mbaino tribe during a murder in Igbo by a Mbaino man.
It may not exactly be a primary source because it's not exactly like, for example, research paper. Research paper has been reviewed by many peers and has been tested to see if it's all true, so you can put more reliability on it.
A blog is just put up on the Internet without peer review or anything. It's raw and nobody knows what's true and what's not.
What made dr kings use of non violence so effective was because of all the media attention the civil rights movement was receiving. It was through such media outlets like television, newspaper and radio that king demonstrated to America and the whole world that the black community wasn't going to bend their knees to white oppression, and that it was in fact the black community that held the moral high ground. This helped create a culture of non violent protest throughout the nation that would continue well beyond the passing of the civil rights act and into present day.
