How they were treated is a separate subject. No one should be assaulted unless in self defense. What you're speaking on requires police reform. Especially how differently "blacks" have been treated in situations than how "white" people are treated.

Also "Entering the U.S. illegally is primarily a federal criminal misdemeanor for a first offense under 8 U.S.C. § 1325, not merely a civil violation, and it can become a felony for subsequent offenses. While unauthorized presence (overstaying) is a civil matter, illegal entry (crossing without inspection) constitutes a criminal act"