Conversation so far:
What kind of legacy does Charles Barkley have?
During his 16-year NBA career, Charles Barkley was regarded as one of the most controversial, outspoken and dominating players in the history of basketball.
What did Charles Barkley do in his career to have a legacy?
Charles Barkley employed a physical style of play that earned him the nicknames Sir Charles and The Round Mound of Rebound.
What made Charles Barkley controversial?
Charles Barkley's confrontational mannerisms often led to technical fouls and fines on the court, and his larger than life persona sometimes gave rise to national controversy off of it.
Did Charles Barkley have conflicts with his teammates due to his confrontational mannerisms?

Question: What are some of the things he was outspoken about?
Self-contained rewrite: What are some of the things Charles Barkley was outspoken about?