Baltar was an anti-hero in both series. He was a traitor to the humans of the colonies in both the old and the new series of BSG:
an·ti·he·ro
ˈantēˌhi(ə)rō,ˈantī-/
noun
noun:
anti-hero
- 1.
a central character in a story, movie, or drama who lacks conventional heroic attributes.
Tony Soprano - antihero
Walter White - antihero
Gordon Gecko - antihero
Robert De Niro in Heat - antihero
In these cases, they are the central character around whom the story revolves, lacking traditional heroic attributes but still manage to get fans to root for them in a sense.
They lack conventional positive attributes and exhibit traits such as selfishness, greed, lack of idealism and nobility, etc. while at the same time may exhibit admirable qualities such as power, strength, intelligence, resolve, etc. That is what makes a story featuring an antihero interesting and involving.
Baltar was a villain, not an anti-hero. In the NuBSG, he was just an idiot.
In the very first episode of S.o.A, the words "nigger"and "spic" were uttered several times, as well as Aryan Brotherhood. There was the whole prison thing going on, not my cuppa. I watched that episode and was turned off by it. Then I watched episode 4 and 5 hoping that it was different and it was still swirling around in the seedy levels of life. So, I am not clueless. The rest of the show may have been different, but I was no longer interested in continuing to watch. But you guys just have to understand that some people just dont like this sort of a show, and I am one of them. Im not ragging on any of you for watching it, but I just did not like what I saw.
They are elements that advance the story. Otto was in prison, who was pivotal to the story due to actions he took inside prison on behalf of the MC.
The Aryan Brotherhood storyline ended with them getting their asses kicked. None of the clubs associate with them. In season 6, a small group is found by the MC and killed (in a nutshell, there's more to the story).
The show also has some Latino and Black street gangs. This is a gritty show about gang life and organized crime but also about brotherhood, family, loyalty and betrayal.
These stories have a lot of realism built into the story telling. When you're dealing with criminal elements, you're definitely going to hear words like spic, wop, nigger, whatever. It doesn't mean the main characters are about that nor that it's prevalent in the story.
SOA grows on you. If you're gonna go into it with prejudices you will never enjoy it. All you're going to get out of it is some name calling a prison scene that somehow translates to the entire series for you and a bunch of asshole bikers.
That being said, it's absolutely fine that you don't like the series but describing it as a series filled with racism and prison culture is a false opinion based strictly on the impression of a couple episodes.
You are quite right about that. 
But at least I watched 1 and a half seasons of it.
