'Liberals: So why is disliking Obama for being a leftist, "racism?"'
As already correctly noted, this fails as a straw man fallacy.
It also fails as a loaded question fallacy.
You don't know what a "loaded question" fallacy is. Dude, you're on the internet. You can google words you don't know. You seem to like using this particular one wrong, so I'll explain it to you.
You could call it begging the question since it makes an assumption that I don't prove. but "loaded question fallacy makes no sense."
A "loaded question" is a no win question. Like "have you stopped beating your wife?" If you say yes, that means you were beating her, if you say no it means you haven't stopped beating her.
That clearly isn't how the question is posed. Jesus man, you're such an intellectual simpleton. And tell the truth, you still don't get it, do you?
Straw man fallacy: the arguer contrives a lie about his opponent in an attempt to misrepresent his opponent’s position – in this case that the president is a ‘leftist,’ which is clearly a lie.
The arguer then attacks the lie he’s contrived (straw man) and easily defeats it, thus claiming ‘victory,’ when in fact he’s only exhibited an inability to think in a logical, rational manner.
Loaded question fallacy: the arguer poses a ‘question’ in bad faith in an effort to propagate a lie about his opponent, where no actual inquiry is sought, and any attempt to answer the ‘question’ is to concede the lie is ‘true.’
Also known as the ‘when did you stop beating your wife’ fallacy, it likewise exhibits an inability to think in a logical, rational manner.
As a consequence, the premise of your thread fails, its ‘topic’ not worthy of ‘debate.’