Several people came to this blog seeking "social justice warriors are racist."
This post's for you.
Social justice warriors love to say "race is a social construct" as if that's a new concept. It's actually ancient. Even in the 19th century, when most English-speaking people thought race was a valid concept, the opponents of racism knew, from a scientific view and a theological one, that humanity is one family.
Social justice warriors say "race is a social construct" in the same way that conventional racists say "I'm not racist, but...." It's a rhetorical device that, in their cases, means nothing. If social justice warriors truly believe race is a social construct, why do they make statements about all white people or all people of color?
Because they're racists.
Social justice warriors get their understanding of race from Critical Race Theory, which does not reject the idea of race. It endorses race, then tries to reject the idea of racism by dividing people racially. For Critical Race Theorists, the "social construct" is based on appearance, not culture. That's the only way that they can divide humanity into "people of color" and "white allies" and, by implication, "white enemies." Since all white people are racist in their view, the white allies are still racist, but they become allies because they accept the terms of CRT.
Critical Race Theorists see power in racial terms, as though only poor dark-skinned people and rich white people are relevant to understanding the US today. But power is not that simple.
For more about the assumptions of Critical Race Theorists:
The Man Who Changed Middle-Class Feminism, or Derrick Bell and Critical Race Theory, Where Racism and Anti-Racism Intersect.
Racism equals prejudice plus power, so only whites can be racist?