You are as guilty here of distortions as you accuse Republicans. The income tax and the Social Security tax are different things. The latter was described by the government, when it was passed, as an insurance program that would provide benefits to the insured proportional to the taxes they paid - with some added boosts for the disabled and indigent.
Both parties use self-serving distinctions when they talk about taxes. When Republicans speak they generally note the % of income taxed collected in the top brackets. When Democrats speak they generally include social security taxes and ignore the rebates (negative income taxes) paid under the various credits for low income people. Both parties usually say only "taxes" in their rhetoric, but both also use self-serving distinctions in doing so.
If you don't think Obamacare is a government takeover of the health care industry, then I think you should explain the distinction.
The term "death panels" does indeed refer to explicitly stated government goals to reduce end of life health care costs. These truly are a significant element of total cost, and one that is faced by individuals, families and insurance companies today - even without the new law. I believe the issue here is that many folks don't weant the government intruding in this area of their lives. Obama himself made this an issue during his campaign speeches.
An estate tax is indeed paid upon the death of the owner of said estate. Calling it a "death tax" is true - though certainly done using a self-serving choice of words.
You say the public has the wrong impression about Obamacare and taxes, but the obvious fact is that you are implicitly implying that those who interpret things differently than you in the areas noted above are necessarily wrong. That is obviously not true. You do not have an exclusive hold on the truth of these matters.