It sounds like a similar situation as to why my articles (and probably your articles) are never going to make it into the New York Times or the Washington Post. If you take a stand and you write an article coming down on the side of international law and you're being critical of government or the wars, you're perceived as biased. But if you write articles that are pro- war or pro-U.S. government policy, then you are considered objective. It's the same thing with these veterans groups. They are censored and kept out of the public eye. Another example is high schools. Military recruiters can go into any high school, hand out their propaganda, help them go to college and recruit people. But Veterans for Peace can't go into high schools because what they're talking about is too political. The military is going in and that's not political, but people talking about peace and alternative ways to get college funding is political. It's the same thing when these organizations are censored and kept out of the media.
(Note: You can view every article as one long page if you sign up as an Advocate Member, or higher).