On his website, Abernathy describes himself as a "documentary photographer based in Minneapolis." His portfolio (I only saw the website) includes commercial work (Target and other clients) and recent events in Minneapolis. He does not claim to be a "dispassionate photojournalist" as chuckroast would insist that he be, even as he acknowledges that journalistic bias exists and cannot separated from documenting events.
Interesting that Robert Capa is invoked as an exemplar of great photojournalism because he was willing to risk his life to get a photo. Arguably, Abernathy was doing the same thing. Capa, as everyone knows, was an ardent opponent of Spanish fascism, and his photography exemplified his stated beliefs. One of the interesting questions this discussion has brought up is: what is photojournalism in this day and age? For me, (photo)journalism should speak truth to power. Full stop. Throughout the world, we are living a moment when the power of the state is greater than ever, the power of the people at its lowest point. If the state purports to define truth, then a countervailing force is necessary. So yes, journalism still has a role to play, as flawed as it may be.
One more point: given that Abernathy is Minneapolis-based, why should he be "objective" about what is happening there?