Indifference means ignorance?

This is not the grey man

I have been told that the grey man lives in ignorance due to his indifference to the others. I want to clarify these two concepts, because the grey man hates ignorance and ignorant people.

Saying that the grey man does not care about other people lives does not mean he does not know what is happening to them, to feel indifference you have to know how are they, how are their lives. But indifference implies also doing nothing about. 

If the grey man was an ignorant he would not know how the others feel, but he knows it.

But if you think that knowing how people feel and doing nothing means to be an ignorant then you can claim: the grey man is an indifferent ignorant, or e the grey man is a conscious ignorant.