I think by counterhegemonic he means dissent from the prevailing point of view.
Wealth has never either here or anywhere been equally distributed. To some, that represents an injustice. To others, it is a fact of life.to the extent that they have emphasized the ways in which the distribution of social and economic risks breaks down along racial lines
By "gatekeeper rank" he is, I think, referring to people who work in the media.
- For Teachers