Actually, that is only the secondary purpose. The primary purpose in the Academic World where the theories are hatched, is similar to the use of the concept of "prejudice," by Leftist quacks, such as the late Gordon Allport of Harvard (and pro-Spanish Communist work in the 1930s). See the discussion of Allport in Myths In American Education.
It is to shut up opposition, by making mainstream Americans afraid to question what is being proposed by the Left.
William Flax
Exactly, it just means “shut up”.
They might as well say it,
“photo ID laws are counter-revolutionary, comrade”