Brooklyn Nets owner Joe Tsai is not happy with his star guard Kyrie Irving.

Irving has a well-established history as what might be described as “free thinking.” On Thursday, he added to that unique history when he took time to show support for a documentary film based on a controversial 2015 book. Irving sent out a tweet that seemed to back the Ronald Dalton, Jr. film “Hebrews to Negroes: Wake up Black America.”

The tweet is problematic because the film pushes several antisemitic tropes and supports ideas shared by extreme factions of the Black Hebrew Israelites. The group has a long history of homophobia, xenophobia and, of course, antisemitism. Rolling Stone reported all the ways in which the movie is problematic.

That support of the controversial film got the seven-time All-Star in hot water with Tsai.