For what it's worth, fascism actually sits neither "left" or "right" because it draws from both ends of the spectrum, but I might suggest that the traditional "allies" of the left were some of the most persecuted by fascist regimes, and it's the traits of ultranationalism, xenophobia, and subservience to mythical "free markets" that tends to take hold in states that become fascist. Similarly, there becomes a need to vilify one's opponents in order to justify subversion of democratic processes, and that is something that FRINGES of the right seem to be doing... Of course, the same could be said of some aspects of the far left as well, though they don't have a massive machine like Fox "News" pushing their message for them.
Frankly, TV has a point - there are people with delusional ideas on the left, but can anyone name any of them? Probably not. Why? Because while they're just as fringe, they aren't getting the media play. I'll hypothesize that this is the reason that the right has to play up their big "Red Scare" show on people who are slightly left-of-centre.
What's more telling is that their big arguments against any given policy seem to be based on wild mischaracterizations of those policies. Look at Beck's attack on the food safety bill that passed yesterday. Look at his slanderous attack on George Soros (and yes, it's slander to knowingly spread false information about someone, I'm kind of disappointed that Soros hasn't sued him, but his justification is probably to make sure he doesn't give Beck even more media attention, and it's not like he needs the money). Look at Beck and Limbaugh's complete misunderstanding of the concept of Net Neutrality. Look at how Neil Cavuto got into an argument on his show disputing the impact of tax cuts (that every dollar in cuts only brings back $0.30, torpedoing the right's argument that tax cuts are stimulative), despite the fact that the research on the matter is clear.
I find it telling, as well, that some "engagements" on these shows which purport to be "fair and balanced" degenerate rather quickly into any dissenting opinion being shouted down by the hosts (BillO being rather famous for this), whereas I seem to have a hard time finding examples of that on other networks like MSNBC.
The problem as I see it has less to do with ideology and more to do with impact on process. A democratic society requires a strong civil society - that is, a public who are engaged, who are informed, who can discuss the issues of the day, and can do so armed with enough facts to make reasonable decisions, whatever they may be. That is breaking down in America - and it's starting to happen in Canada as well, and will spread - because what's being discussed is no longer facts, it's so heavily spun that any such discourse is well divorced from reality.
The thing of it is, that if people had the inclination to do their own homework as it were, to scratch the surface of the claims, they'd see they're nonsense, but not enough people are doing that, so the lies propagated so commonly become accepted by some as canon, when nothing at all could be further from the truth. So people then potentially are casting votes not based on any sort of informed participation, but purely on hearing what they want delivered by self-described "rodeo clowns" (that was Beck, incidentally).