I heard that it is pretty blatant in it's historical revisionism vis a vis the political inclination of the black panther party, but I haven't seen it to corroborate that.
Edit: okay, after reading the directors interview with GQ and reading some other comments it seems like i might have been completely wrong lol. Very excited to watch it now
The Black Panthers were largely Maoist in ideology and used Mao's little red book as a reference. If you watch Agnes Varda's short documentary on the Black Panthers you see them a lot. I was wondering how much the movie would should that they were Maoists.
The film has them reference Mao once if I remember correctly but definitely doesn't go into the group's ideology much.