Conversation so far:
What were the internal problems of Sly and the Family Stone?
Relationships within Sly and the Family Stone were deteriorating; there was friction in particular between the Stone brothers and Larry Graham.
What was the friction between Sly and Freddie Stone based on?
Epic requested more marketable output. The Black Panther Party demanded that Sly replace Gregg Errico and Jerry Martini with black instrumentalists and fire manager David Kapralik.

Question: Are there any other interesting aspects about this article?
Self-contained rewrite: Are there any other interesting aspects about Sly and the Family Stone besides friction between the Stone brothers and Larry Graham?