Common meaning:

Getting knowledge wrong.

Hidden meaning of the Equity religion: 

The ideas of the marginalized and oppressed are being denied credibility.

Discussion:

The Equityists believe that the narrative of the dominant oppressors is so strong that it prevents the ideas of the marginalized from being heard and being considered credible.

Equity believers say the ideas of the Western world are false. Anything that supports these ideas like logic, rationalism and facts, are just tricks to support an oppressive system. We all need to be open to new ways of knowing which means we need to reject any idea or concept that comes from the oppressive West.

The Equityists claim they only want to right a terrible wrong, but in reality they want to use the acid of epistemic injustice to dissolve even the most basic knowledge of the Western world. Recently it has become clear that even simple basic arithmetic is not immune to this religious radicalism. Some Equity leaders have started to claim that two plus two is not equal to four. You cannot make this stuff up.

The real injustice is that credible truth is being replaced with religious lies.