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
I'm not sure what you expected, but this movie shows the Black Panther movement as being explicitly marxist, and that the FBI fully assassinated Fred Hampton. Sure it could have gone further, but for mainstream Hollywood this is good stuff.