^^^^^
Okay, Sisko (and Kasity too) is the only Human character that I can  remember that strongly identifies with a race.
		
		
	 
Nonsense, we've seen plenty of other characters who strongly identified  with and were proud of their heritage. So it's okay for Picard to  strongly identify with his heritage as a Frenchman, and it's okay for  Chekov to strongly identify with his heritage as a Russian, and it's  okay for Scotty to strongly identify with his heritage as a Scot, and  it's okay for O'Brien to strongly identify with his heritage as an  Irishman, and it's okay for Chakotay to strongly identify with his  heritage as a Native American -- but because Sisko strongly identifies  with his heritage as an African American, that's a problem?
You're applying an inconsistent standard.
	
	
		
		
			We've seen many who have identified with a  ethnic, national or cultural group, but not with a racial group.
		
		
	 
Those groupings are all 
culturally-designated groupings, though.  Why is it okay to be proud of one's "national" heritage as a Frenchman  but not of one's "racial" heritage as an African American?
	
	
		
		
			Except  Sisko. I don't recall Uhura or LaForge ever referring to themselves as  Sisko did.
		
		
	 
Neither of them were African American. Uhura and LaForge were both  African, period (even if they were played by actors with American  accents).
	
	
		
		
			O'Brien was Irish, but never white.
		
		
	 
You do realize that a few generations ago, "Irish" or "English" played  the same "in-group, out-group, oppress one and privilege another" role  that "race" plays in America?
Besides, it's not clear how Sisko conceptualizes his African American  identity. You're viewing it through a "racial" lens, certainly, but it's  just as probable that Sisko conceptualizes "African American-ness" as a  matter of 
cultural heritage rather than "race." It's never  established canonically how he conceptualizes the idea of African  American identity.
	
	
		
		
			From TOS and other series we know that Klingons come in   different colors, no mention is made of race by Worf or others. Troi is   only a Betazed. Vulcans obviously have multiple races too, while Tuvok   married within his race, there no dialog where he openly considers   himself anything but Vulcan.
		
		
	 
Actually, it's not clear that any of those species have the idea of  "race" in their culture. "Race" is a folk taxonomy with no basis in  biology. Here in America, we think of "race" in terms of skin color (of  which there are certainly varying skin tones amongst those species), but  other cultures conceptualize "race" in very different ways. Irish is a  perfect example -- I had a Sociology professor in college who talked  about how, when he lived in Ireland, your "race" was a matter of whether  you were Protestant or Catholic, and how he would hear people talking  about "Catholic noses" or "Protestant noses," for instance.
So, once again, while we've seen Sisko demonstrate pride in and  identification with an African American identity, we don't know if he  conceptualizes that identity in the manner you're asserting (i.e., as a  "race," with "race" being defined in terms of skin color as per  traditional American ideas of "race").
	
	
		
		
			Picard and Riker never once shared a conversation where they  referred  solely to  Caucasians and their historical experiences with  numerous US's and WE's. They both seemly consider themselves Humans only,  not white Humans.
		
		
	 
Bullshit. Picard considers him a 
French Human. Riker considers  himself an 
Alaskan Human. Neither one of them imagines themselves  as some sort of "generic" Human.
	
	
		
		
			But we have a scene where Sisko does just that, by way of Sisko's  own  word, he thinks of himself as a black Human. Not as a Human only.  And  for that reason only is  why I refer to him in this episode as a  racist.
		
		
	 
Also bullshit. That's not racism. The fact that he identifies with and  is proud of a specific cultural heritage within his Human heritage does  not mean that he does not 
also identify with a larger Human  heritage, nor does it mean he views his heritage group as being superior  to others.
Anti-Racism does not mean pretending that "race" does not exist as a  culturally-defined grouping, or that different cultures do not exist. It  means being committed to equality, nothing to "color-blindedness."
	
	
		
		
			
	
		
	
	
		
		
			Don't try to invoke Roddenberry to  me  ...
		
		
	 
I realize Star Trek wasn't the man's personal property,  but  does anyone think the dialog in the scene in question would have  been  written by him, or gotten pass him while he was in a position of   control?
		
 
		
	 
 
Why not? Roddenberry had Uhura hear the word "Negress" and react simply  by saying that in her era, they had learned not to fear words. Surely in  the 24th Century, Humans have learned not to fear different forms of  cultural pride, too.