An idea for a poll: Survey black Americans to see if they think racism is any way behind the three-decade-long, never-ending criticism of Supreme Court Justice Clarence Thomas.

This shouldn’t be a controversial notion. Progressives and Democrats have long attributed racism to criticism of black government officials they like. Only last month, former White House chief-of-staff Ron Klain said racism is behind the criticism of Vice President Kamala Harris (of course along with sexism).

The left never tires of telling us how deeply racism infects the nation, that American institutions are embedded with systemic racism, that white people can’t recognize the unconscious racist attitudes they harbor about people of color, that white children develop racial bias as early as 4 years old, that racism permeates even math and science, that “white privilege” remains an ongoing injustice, and on and on.

With racism so deeply entrenched in American society, criticism of black politicians and government officials can be — even sometimes must be — based on race, according to progressive thinking.