"Hating Blacks means hating Jews"
Utter poppycock!
Certain political elements within the Semite ethny along with colluding Gentiles decided, over a hundred years ago, to use the African descended Americanized Negro as a psychological battering ram (guilt-trip weapon) against the white (Gentile) world. This tactic finally manifested itself in the 1960s, the era of the so-called Civil Rights and Affirmative Action movements (for nonwhites only, lest we forget). No need to further elaborate here.
People are free to feel any emotion they please including hate for whomever they damn well like. It is up to the recipient/s of such sentiments to defend themselves accordingly. Nobody has a right to dictate how one should or should not feel about anything or anybody.
If grevious bodily harm has been done then that constitutes a crime and not before, but only if the harm was done maliciously and not in self-defence.