I don’t think anyone seriously holds the position that all opposition to Obama is racist. This is actually a common straw man among Republicans. They’ll make some baseless criticism like “Obama is going to force us all to gay marry - oh wait, I forgot, we can’t say anything bad about Obama or we’re racist” (exaggerated only slightly). I see this about a million times more than anyone saying “you oppose the health care reform because you’re racist”
Think about what the republican base stands for now. They can’t run on anything positive - they can’t say “vote republican, we’ll return to the golden ages of 2000-2008!” - so they’re not united by what they stand for, they’re united by what they stand against, who they hate. And to sustain an entire political movement based on this requires constant stoking of the fires. This is why the republican party is catering to these people - they need that hatred to be strong enough to keep people united without stepping back and becoming disenfranchised by the massive republican fail of last decade.
So you have a lot of people who are angry - they know on some level the republican party fucked up, but damn if I’m ever gonna vote for some fucking fag communist democrat!!! There’s a lot of resentment and disenfranchisement that has to be channeled into blaming and hatred towards others.
So while no one is saying “anyone who opposes health care reform is racist!”, if you were to ask the question “why is there so much hatred for Obama? Why, from day 1, were people fucking nuts about him?” - the above stuff is a factor, but racism is undoubtedly a large part of it. To deny this is absurd - to think that we’re all so evolved that race truly isn’t an issue is just ridiculous.
These factors often become combined. It’s not good to be overtly racist these days in most parts of the country, so this hatred is channeled into beliefs about Obama being an outsider. Think of how widespread the idea that he’s a muslim is, or that he’s a communist. These things are all designed to say essentially that he’s an outsider, he’s not truly one of us. Read between the lines here. It’s easier to say “it worries me that he’s a secret muslim” than to say “it worries me that he’s a (not so secret) black guy” in public company.
The Republicans know that this hatred is the primary driver of their cohesion now, and they know that they can take advantage of these racist feelings, thinly disguising them with conspiracy theories about him being an outsider. This racial subtext is basically part of their deliberate efforts to keep their coalition from falling apart after their massive failing of governance.
So, no, it’s not fair to say “this criticism of Obama is baseless because you’re racist” and that very rarely happens amongst anyone here. It can be fair to say something along the lines of “the republican hatred of Obama is partly driven by race”. As I said - much more often it’s used as cover by someone criticising Obama. Oh, I wish I could say that Obama created a deficit out of nowhere wink wink but that would be racist so I guess I won’t!