As you can see from this chart made by some racist mad scientist, race is clearly a social construct. His research violated the new Law of Political Correctness, and agents are shutting down his lab as I write this.
Race is clearly a social construct. But it’s a social construct with some powerful attributes. There have been wild and violent wars and battles between various social constructs around the world. These are termed social construct conflicts, social construct wars and social construct violence. The old terms ethnic conflict, ethnic warfare and ethnic violence are no longer acceptable and use of them is de facto evidence of racism. Use of those terms is considered such strong evidence of racism that it is even admissible in a court of Race Law.
Occasionally US cities erupt with what are called social construct riots, in which various social constructs try to destroy and burn down their cities for unknown reasons. Research into these riots has been banned because the social constructs involved were undefinable and do not even in fact exist. Recently there was the Rodney King Social Construct Riot. Before that, there were the Watts Social Construct Riots of 1965 and other famous Social Construct Riots in Detroit, Newark and other places.
These riots can be violent. Sometimes persons of one social construct will even attack persons of another social construct during these riots. How they know how or even why to attack someone of another construct is unknown, because there is no way to determine anyone’s particular construct, since the whole concept is all imaginary anyway.