Probably not an explicit or even consciously acknowledged level, but it's there.
I think it's dangerous and foolish to start attributing opposition to subconscious racism. I'm not saying you are, but some certainly do: either they really don't understand the objections of the opposition (so they substitute a motive they can understand) or it's just a cheap shot to demonize opponents. Either way, it's not a healthy attitude.
I'm not denying the existence of racists, or the fact that some people protesting Obama are racist. I just despise the "closet racist" way of dismissing/demonizing opposition.
<rant>
Also, the fact that people are blaming/crediting Obama for new healthcare proposals makes me want to scream. Obama isn't writing healthcare proposals. He doesn't have that power! That power belongs to congress, as does the blame/credit for whatever ends up happening. Sure, Obama wields the veto, but that is most definitely the lesser responsibility. RTFC and hold the right people responsible for once! </rant>
<morerant>
I'm becoming more and more convinced that a huge chunk of America doesn't really understand or want the constitutional republic form of government that we theoretically have. They want one person, a King, to place their trust in and blame their problems on. That scares the crap out of me.
At the close of the Constitutional Convention in Philadelphia on September 18, 1787, a Mrs. Powel anxiously awaited the results, and as Benjamin Franklin emerged from the long task now finished, asked him directly: "Well Doctor, what have we got, a republic or a monarchy?" "A republic if you can keep it" responded Franklin.
</morerant>
I feel better now. Sort of.