How Does Adding an Adjective to the Word “Justice” Corrupt It?

Questions about why Greg says that adding any adjective to the word “justice” corrupts it, whether a Christian should consider accepting an invitation to join the DEI committee at their workplace, and how a Christian can best serve as a DEI committee member.

• What do you mean when you say, “Whenever you add any adjective to the word ‘justice,’ you corrupt it”? 
• Should a Christian consider accepting an invitation to join the DEI committee at their workplace, and how can a Christian best serve as a DEI committee member?