He won’t be sued for civil rights violations - he is not a government employee nor did he act under color of law.
Furthermore, the truth is the truth and Zimmerman is himself a minority and that does not fit the narrative.
There have been cases in both California and Oregon where the civil rights violation cited was the taking of one’s life. It did not require a color of authority component. Wait and see what DOJ does. Or even the family in the civil courts.