A question of color

I freely confess (not for the first time, too) in being ignorant on many aspects of US politics, history and whatnot. This article only added to my state of general confusion. Not going into all the names of people and political groups mentioned in the article, I would like to clarify only one question related to this picture:

The uniforms on these New Black Panthers folks: aren't they brown rather than black? Or am I getting color blind on top of all them other ailments?