Huey Newton was not what you would call a good speaker. In fact, he had a kind of high pitched monotonous voice and his rambling for three hours about the negation of the negation was sheer disaster. People walked out in droves. Instead of criticizing what was happening, most of the Party members defended it. When I said that Huey needed speaking lessons they jumped down my throat. When Huey changed his title from defense minister to the ridiculous "Supreme Commander" and then to the even more ridiculous "Supreme Servant," damn near nobody said a word. That was one of the big problem in the Party. Criticism and self-criticism were not encouraged, and the little that was given often was not taken seriously. Constructive criticism and self-criticism are extremely important for any revolutionary organization. Without them, people tend to drown in their mistakes, and not learn from them.
One thing I see fairly often on here is the idea that trying to refine the presentation of leftist ideas = ceding ground to liberals, or watering leftist ideas down. The importance of good presentation is somewhere between "extremely helpful" and "absolutely crucial."
The BPP seems to have left a lot of potential untapped because they didn't care enough about how people received their ideas. We should learn from that.