No - it isn’t.
But he’ll get away with it because he’s black and he has a feel good PC cause.
No, you are very wrong.
Brandenburg is one of the most important SCOTUS cases in history. Here is a summary.
The Supreme Court has held that “advocacy of the use of force” is unprotected when it is “directed to inciting or producing imminent lawless action” and is “likely to incite or produce such action”. In Brandenburg v. Ohio (1969), the Supreme Court unanimously reversed the conviction of a Ku Klux Klan group for “advocating ... violence ... as a means of accomplishing political reform” because their statements at a rally did not express an immediate, or imminent intent to do violence.